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Solution
Q.1 Correct
Q.1 In-correct
Q.1 Unattempt
Synonym of Assuage is ____
Synonym of Assuage is ____
Q.2 Correct
Q.2 In-correct
Q.2 Unattempt
‘X + Y’ means ‘X is the father of Y’, ‘X-X’ means ‘X is the wife of Y’, ‘X × Y’ means ‘X is the brother of Y’, ‘X ÷ Y’ means, ‘X is the mother of Y’ and ‘X = Y’ means ‘X is the sister of Y’. On the basis of this information, what does X + Y – Z mean?
‘X + Y’ means ‘X is the father of Y’, ‘X-X’ means ‘X is the wife of Y’, ‘X × Y’ means ‘X is the brother of Y’, ‘X ÷ Y’ means, ‘X is the mother of Y’ and ‘X = Y’ means ‘X is the sister of Y’. On the basis of this information, what does X + Y – Z mean?
Q.3 Correct
Q.3 In-correct
Q.3 Unattempt
A’s income is 10 % more than B’s income by how much percent is B’s income less than that of A
A’s income is 10 % more than B’s income by how much percent is B’s income less than that of A
Q.4 Correct
Q.4 In-correct
Q.4 Unattempt
Only one cowards hit below the belt. What is the meaning of the underlined phrase?
Only one cowards hit below the belt. What is the meaning of the underlined phrase?
Q.5 Correct
Q.5 In-correct
Q.5 Unattempt
It takes six technicians a total of 10 hr to build a new server from direct Computer, with each working at the same rate. If six technicians start to build the server at 11 AM, and one technician per hour is added beginning at 5 PM, at what time will the server be completed?
It takes six technicians a total of 10 hr to build a new server from direct Computer, with each working at the same rate. If six technicians start to build the server at 11 AM, and one technician per hour is added beginning at 5 PM, at what time will the server be completed?
Q.6 Correct
Q.6 In-correct
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A student look five papers in an examination, where the full marks were the same for each paper. His marks in these papers were in the proportion of 6 : 7 : 8 : 9 : 10. In all papers together, the candidate obtained 60% of the total marks. Then the number of papers in which he got more than 50% marks is
A student look five papers in an examination, where the full marks were the same for each paper. His marks in these papers were in the proportion of 6 : 7 : 8 : 9 : 10. In all papers together, the candidate obtained 60% of the total marks. Then the number of papers in which he got more than 50% marks is
Q.7 Correct
Q.7 In-correct
Q.7 Unattempt
At a certain fast food restaurant, Brian can buy 3 burgers, 7 shakes, and one order of fries for Rs. 120 exactly. At the same place it would cost Rs. 164.5 for 4 burgers, 10 shakes, and one order of fries. How much would it cost for an ordinary meal of one burger, one shake, and one order of fries?
At a certain fast food restaurant, Brian can buy 3 burgers, 7 shakes, and one order of fries for Rs. 120 exactly. At the same place it would cost Rs. 164.5 for 4 burgers, 10 shakes, and one order of fries. How much would it cost for an ordinary meal of one burger, one shake, and one order of fries?
Q.8 Correct
Q.8 In-correct
Q.8 Unattempt
A man walks 5 metres straight and then 10 meters to the right. After this he continuously turns left and every time walks 10, 5 and 10 meters respectively. How far is he now his starting point?
A man walks 5 metres straight and then 10 meters to the right. After this he continuously turns left and every time walks 10, 5 and 10 meters respectively. How far is he now his starting point?
Q.9 Correct
Q.9 In-correct
Q.9 Unattempt
The owner of a local jewelry store hired three watchmen to guard his diamonds, but a thief still got in and stole some diamonds. On the way out, the thief met each watchman, one at a time. To each he gave 12 of the diamonds he had then, and 2 more besides. He escaped with one diamond. How many did he steal originally?
The owner of a local jewelry store hired three watchmen to guard his diamonds, but a thief still got in and stole some diamonds. On the way out, the thief met each watchman, one at a time. To each he gave 12 of the diamonds he had then, and 2 more besides. He escaped with one diamond. How many did he steal originally?
Q.10 Correct
Q.10 In-correct
Q.10 Unattempt

study the following information carefully and answer the questions given below.

Raina, Murli, Haiden, Patel, Gony, Balaji and Morkel are seven members in a family, out of which there are three females and four males. There are two managers, two lawyers, one teacher, one engineer and one doctor. No lady is either a teacher or an engineer. Haiden is a lawyer and is married to Raina, who is a teacher. Balaji, the engineer, is married to Patel, who is neither a lawyer nor a doctor. No two ladies have the same profession. Murli is the sister of Morkel, who is a manager.

Then what is Gony's profession? 

study the following information carefully and answer the questions given below.

Raina, Murli, Haiden, Patel, Gony, Balaji and Morkel are seven members in a family, out of which there are three females and four males. There are two managers, two lawyers, one teacher, one engineer and one doctor. No lady is either a teacher or an engineer. Haiden is a lawyer and is married to Raina, who is a teacher. Balaji, the engineer, is married to Patel, who is neither a lawyer nor a doctor. No two ladies have the same profession. Murli is the sister of Morkel, who is a manager.

Then what is Gony's profession? 
Q.1 Correct
Q.1 In-correct
Q.1 Unattempt
The solution of the differential equtation dydx+2xy=e−x2 with y(0) = 1 is
The solution of the differential equtation dydx+2xy=e−x2 with y(0) = 1 is
Q.2 Correct
Q.2 In-correct
Q.2 Unattempt
A die is thrown twice and the sum of the dots on the two faces appeared, is observed to be 7. The conditional probability that number 2 has appeared at least once is
A die is thrown twice and the sum of the dots on the two faces appeared, is observed to be 7. The conditional probability that number 2 has appeared at least once is
Q.3 Correct
Q.3 In-correct
Q.3 Unattempt
If A is a 3 × 3 real matrix with Eigen values 1, 2, 3 then the matrix A satisfies
If A is a 3 × 3 real matrix with Eigen values 1, 2, 3 then the matrix A satisfies
Q.4 Correct
Q.4 In-correct
Q.4 Unattempt
∫3π44π3⁡sin⁡x⋅cos⁡x|cos⁡x|dx=k2, then the value of k is
∫3π44π3⁡sin⁡x⋅cos⁡x|cos⁡x|dx=k2, then the value of k is
Q.5 Correct
Q.5 In-correct
Q.5 Unattempt
If A is a real square matrix, then AAT is
If A is a real square matrix, then AAT is
Q.6 Correct
Q.6 In-correct
Q.6 Unattempt
In a 20˚ full depth involute gear system, centre distance between pinion and gear is 120 mm. If module of gear is 4 mm and number of teeth is 40, then number of teeth on pinion is___
In a 20˚ full depth involute gear system, centre distance between pinion and gear is 120 mm. If module of gear is 4 mm and number of teeth is 40, then number of teeth on pinion is___
Q.7 Correct
Q.7 In-correct
Q.7 Unattempt
A car moving with uniform acceleration covers 450 m in a 5 second interval, and covers 700 m in a 5 second interval. The acceleratin of the car is
A car moving with uniform acceleration covers 450 m in a 5 second interval, and covers 700 m in a 5 second interval. The acceleratin of the car is
Q.8 Correct
Q.8 In-correct
Q.8 Unattempt
If a load of 200 kN is acting on a transverse weld of leg size 10 mm and length 200 mm, then the shear stress on the throat of the weld is
If a load of 200 kN is acting on a transverse weld of leg size 10 mm and length 200 mm, then the shear stress on the throat of the weld is
Q.9 Correct
Q.9 In-correct
Q.9 Unattempt
Calculate the time (in seconds) required to fill a mold cavity of volume (5 × 105) mm3. If the cross-sectional area at the base of the down-sprue is 150 mm2 and of height 100 mm. (Take cross-sectional area of horizontal runner as 200 mm2 and assume no losses).
Calculate the time (in seconds) required to fill a mold cavity of volume (5 × 105) mm3. If the cross-sectional area at the base of the down-sprue is 150 mm2 and of height 100 mm. (Take cross-sectional area of horizontal runner as 200 mm2 and assume no losses).
Q.10 Correct
Q.10 In-correct
Q.10 Unattempt
Find the piezometric head difference if the inverted U-tube manometer gives a reading of 25 cm. The manometer is attached to a pipe carrying water (s = 1) & specific gravity of manometric fluid = 0.8 (Give answer in cm of water).
Find the piezometric head difference if the inverted U-tube manometer gives a reading of 25 cm. The manometer is attached to a pipe carrying water (s = 1) & specific gravity of manometric fluid = 0.8 (Give answer in cm of water).
Q.11 Correct
Q.11 In-correct
Q.11 Unattempt
TTT diagram indicates time, temperature and transformation of
TTT diagram indicates time, temperature and transformation of
Q.12 Correct
Q.12 In-correct
Q.12 Unattempt
Consider two concentric spheres with diameters 12 cm and 18 cm forming an enclosure. The view factor, from the inner surface of the outer sphere to its own, is 
Consider two concentric spheres with diameters 12 cm and 18 cm forming an enclosure. The view factor, from the inner surface of the outer sphere to its own, is 
Q.13 Correct
Q.13 In-correct
Q.13 Unattempt
The crippling load for both ends fixed long column is given by
The crippling load for both ends fixed long column is given by
Q.14 Correct
Q.14 In-correct
Q.14 Unattempt
Which of the following is a Frenkel defect?
Which of the following is a Frenkel defect?
Q.15 Correct
Q.15 In-correct
Q.15 Unattempt
In a 2-high rolling process, the thickness of the metallic strip reduces by 30%. The strip is observed to get widened by 5%. If the entrance speed is 15 m/min and roll diameter is 400 mm, then the exit velocity (in m/min) is _______. (Upto one decimal place)
In a 2-high rolling process, the thickness of the metallic strip reduces by 30%. The strip is observed to get widened by 5%. If the entrance speed is 15 m/min and roll diameter is 400 mm, then the exit velocity (in m/min) is _______. (Upto one decimal place)
Q.16 Correct
Q.16 In-correct
Q.16 Unattempt
An ideal gas undergoes expansion according to the process PV-0.5 = constant. The temperature of the gas during the expansion process
An ideal gas undergoes expansion according to the process PV-0.5 = constant. The temperature of the gas during the expansion process
Q.17 Correct
Q.17 In-correct
Q.17 Unattempt

The independent float for the following activity is _______

The independent float for the following activity is _______
Q.18 Correct
Q.18 In-correct
Q.18 Unattempt

Air at 17°C is heated to 25°C when it passes over the coils of a heater whose surface temperature is 33°C.

The by-pass factor for the process is ________.

Air at 17°C is heated to 25°C when it passes over the coils of a heater whose surface temperature is 33°C.

The by-pass factor for the process is ________.
Q.19 Correct
Q.19 In-correct
Q.19 Unattempt
A slab milling operation is performed on a mild steel workpiece by a straight slab cutter of 80 mm diameter with 40 teeth. The depth of cut and the rotational speed of cutter are 3 mm and 50 rpm, respectively. If the table feed is 25 mm/min, the value of maximum uncut chip thickness (in microns) will be ______ (Rounded up to two decimals).
A slab milling operation is performed on a mild steel workpiece by a straight slab cutter of 80 mm diameter with 40 teeth. The depth of cut and the rotational speed of cutter are 3 mm and 50 rpm, respectively. If the table feed is 25 mm/min, the value of maximum uncut chip thickness (in microns) will be ______ (Rounded up to two decimals).
Q.20 Correct
Q.20 In-correct
Q.20 Unattempt
The material removal rate will be higher in ultrasonic machining process for materials with
The material removal rate will be higher in ultrasonic machining process for materials with
Q.21 Correct
Q.21 In-correct
Q.21 Unattempt
In a project, the critical path has three activities with standard deviation 2, 3 and 5. The standard deviation for project length is
In a project, the critical path has three activities with standard deviation 2, 3 and 5. The standard deviation for project length is
Q.22 Correct
Q.22 In-correct
Q.22 Unattempt
Hot water at 95° C is used in a plate heat exchanger for heating 2 kg/s fruit juice form 45°C to 75°C. Specific heat of fruit juice is 3.7 kJ/kg-K. Final temperature of the hot water is 70° C. Overall heat transfer coefficient is 1122 W/m2-K. Heat transfer area is 12.75 m2. The ratio of actual log mean temperature difference to ideal log mean temperature difference is_____
Hot water at 95° C is used in a plate heat exchanger for heating 2 kg/s fruit juice form 45°C to 75°C. Specific heat of fruit juice is 3.7 kJ/kg-K. Final temperature of the hot water is 70° C. Overall heat transfer coefficient is 1122 W/m2-K. Heat transfer area is 12.75 m2. The ratio of actual log mean temperature difference to ideal log mean temperature difference is_____
Q.23 Correct
Q.23 In-correct
Q.23 Unattempt

Consider a Watt governor as shown in figure. What is speed (rpm) of governor for the following position shown?

ℓ = 70 cm, R = 80 cm, θ = 50° 

Consider a Watt governor as shown in figure. What is speed (rpm) of governor for the following position shown?

ℓ = 70 cm, R = 80 cm, θ = 50° 
Q.24 Correct
Q.24 In-correct
Q.24 Unattempt
The safe working pressure for a spherical pressure vessel 2 m diameter and 2 cm wall thickness, if the maximum allowable tensile stress is 45 MPa.
The safe working pressure for a spherical pressure vessel 2 m diameter and 2 cm wall thickness, if the maximum allowable tensile stress is 45 MPa.
Q.25 Correct
Q.25 In-correct
Q.25 Unattempt

Some of the pins with diameter sizes 35+0.001+0.003mm are plated with thickness of 40−3.0+4.0μm. Neglecting the gauge tolerances, the size of the GO gauge to inspect the plated component in mm is

Some of the pins with diameter sizes 35+0.001+0.003mm are plated with thickness of 40−3.0+4.0μm. Neglecting the gauge tolerances, the size of the GO gauge to inspect the plated component in mm is
Q.26 Correct
Q.26 In-correct
Q.26 Unattempt
Consider dydx=x+y with y(0) = 0 using Euler’s method with step size of 0.1. The value of y(0.3) is
Consider dydx=x+y with y(0) = 0 using Euler’s method with step size of 0.1. The value of y(0.3) is
Q.27 Correct
Q.27 In-correct
Q.27 Unattempt
L{t∫0t⁡e−5tdt}=
L{t∫0t⁡e−5tdt}=
Q.28 Correct
Q.28 In-correct
Q.28 Unattempt

Let P(z) = a + bz + cz2 and ∮C⁡P(z)zdz=∮C⁡P(z)z2dz=∮C⁡P(z)z3dz=2πi, where C is a unit circle |z| = 1 and a, b, c are positive real constants. Then the values of a, b and c are

Let P(z) = a + bz + cz2 and ∮C⁡P(z)zdz=∮C⁡P(z)z2dz=∮C⁡P(z)z3dz=2πi, where C is a unit circle |z| = 1 and a, b, c are positive real constants. Then the values of a, b and c are
Q.29 Correct
Q.29 In-correct
Q.29 Unattempt
The angle between the tangents to the curve r̅ = t2 i̅ + 2tj̅ - t3 k̅ at the point t = ± 1 is ______
The angle between the tangents to the curve r̅ = t2 i̅ + 2tj̅ - t3 k̅ at the point t = ± 1 is ______
Q.30 Correct
Q.30 In-correct
Q.30 Unattempt

The value of

∫S⁡(x+z)dydz+(y+z)dxdz+(x+y)dxdy, 

Where ‘S’ is the surface of the sphere

x2 + y2 + z2 = 4, is ______

The value of

∫S⁡(x+z)dydz+(y+z)dxdz+(x+y)dxdy, 

Where ‘S’ is the surface of the sphere

x2 + y2 + z2 = 4, is ______
Q.31 Correct
Q.31 In-correct
Q.31 Unattempt

An elastic string connected to the block ‘A’ (weight 40 W) passes over a smooth pulley at the end of rough horizontal table and then under a second smooth pulley carrying a block ‘B’ (weight 20 N) as shown in figure and other end of the string is fixed. When block ‘A’ is released, it moves with acceleration of g/5. The value of coefficient of friction between block and table is

An elastic string connected to the block ‘A’ (weight 40 W) passes over a smooth pulley at the end of rough horizontal table and then under a second smooth pulley carrying a block ‘B’ (weight 20 N) as shown in figure and other end of the string is fixed. When block ‘A’ is released, it moves with acceleration of g/5. The value of coefficient of friction between block and table is
Q.32 Correct
Q.32 In-correct
Q.32 Unattempt
The demand for a product in a month of March turned out to be 20 units against an earlier made forecast of 20 units. The actual demand for April and May turned to be 25 and 26 units respectively. What will be the forecast for the month of June, using exponential smoothening method taking alpha as 0.2? (Nearest integer)
The demand for a product in a month of March turned out to be 20 units against an earlier made forecast of 20 units. The actual demand for April and May turned to be 25 and 26 units respectively. What will be the forecast for the month of June, using exponential smoothening method taking alpha as 0.2? (Nearest integer)
Q.33 Correct
Q.33 In-correct
Q.33 Unattempt
A body is subjected to a direct tensile stress of 400 MPa in one plane accompanied by a simple shear stress of 150 MPa. The maximum normal stress will be
A body is subjected to a direct tensile stress of 400 MPa in one plane accompanied by a simple shear stress of 150 MPa. The maximum normal stress will be
Q.34 Correct
Q.34 In-correct
Q.34 Unattempt

A common bottom gating system design is shown in the figure below.

The cross-sectional area of gate is 10 cm2. Mould filling time (in seconds) for above gating system is ______.

A common bottom gating system design is shown in the figure below.

The cross-sectional area of gate is 10 cm2. Mould filling time (in seconds) for above gating system is ______.
Q.35 Correct
Q.35 In-correct
Q.35 Unattempt

The stepped cantilever is subjected to moment as shown. The magnitude vertical deflection at free end B is xMl2EI. The value of x is ………..

The stepped cantilever is subjected to moment as shown. The magnitude vertical deflection at free end B is xMl2EI. The value of x is ………..
Q.36 Correct
Q.36 In-correct
Q.36 Unattempt
In an arc welding process of mild steel with a potential of 25 V and current of 200 A, the travel speed is 5 mm/sec and the cross-sectional area of joint is 20 mm2. Heat required to melt steel is 10 J/mm3 and the heat transfer efficiency is 0.8. The melting efficiency is ______ (%).
In an arc welding process of mild steel with a potential of 25 V and current of 200 A, the travel speed is 5 mm/sec and the cross-sectional area of joint is 20 mm2. Heat required to melt steel is 10 J/mm3 and the heat transfer efficiency is 0.8. The melting efficiency is ______ (%).
Q.37 Correct
Q.37 In-correct
Q.37 Unattempt

In an horizontal reciprocating engine, Force in connecting rod is 3 kN. Find out Normal reaction (N) exerted by cylinder if crank makes an angle of 30˚ with line of stroke as shown.

Length of crank = 150 mm, Length of connecting rod = 750 mm

In an horizontal reciprocating engine, Force in connecting rod is 3 kN. Find out Normal reaction (N) exerted by cylinder if crank makes an angle of 30˚ with line of stroke as shown.

Length of crank = 150 mm, Length of connecting rod = 750 mm
Q.38 Correct
Q.38 In-correct
Q.38 Unattempt
A spring mass system has natural frequency of 5 rad/s and damping factor is 0.3. What is ratio of 2 successive amplitudes of vibration?
A spring mass system has natural frequency of 5 rad/s and damping factor is 0.3. What is ratio of 2 successive amplitudes of vibration?
Q.39 Correct
Q.39 In-correct
Q.39 Unattempt
Inner and outer radius of the hollow cylinder and hollow sphere are r, 3r, 2r and 3r respectively. Insulation is applied on both, hollow cylinder and hollow sphere. Both are made up of same material and have same environmental conditions. Find the difference in critical thicknesses of insulation. (Notations have their usual meanings.)
Inner and outer radius of the hollow cylinder and hollow sphere are r, 3r, 2r and 3r respectively. Insulation is applied on both, hollow cylinder and hollow sphere. Both are made up of same material and have same environmental conditions. Find the difference in critical thicknesses of insulation. (Notations have their usual meanings.)
Q.40 Correct
Q.40 In-correct
Q.40 Unattempt

The band brake shown in the figure is to have a maximum lining presure of 600 kPa, the drum is 350 mm in diameter, and the band width is 100 mm. The coefficient of friction is 0.25 and the angle of wrap is 270°. Band tensions of the brake are

The band brake shown in the figure is to have a maximum lining presure of 600 kPa, the drum is 350 mm in diameter, and the band width is 100 mm. The coefficient of friction is 0.25 and the angle of wrap is 270°. Band tensions of the brake are
Q.41 Correct
Q.41 In-correct
Q.41 Unattempt
A ship soils in sea-water (ρ = 1024 kg/m3) at a velocity of 25 m/s. A 1:10 model is sailing in water of density = 1000 kg/m3. Find the speed and resistance due to waves on model, if the resistance due to waves on prototype is 430 N.
A ship soils in sea-water (ρ = 1024 kg/m3) at a velocity of 25 m/s. A 1:10 model is sailing in water of density = 1000 kg/m3. Find the speed and resistance due to waves on model, if the resistance due to waves on prototype is 430 N.
Q.42 Correct
Q.42 In-correct
Q.42 Unattempt
In an orthogonal machining operation, if U = specific cutting energy, β = friction angle, ϕ = shear plane angle, α = Tool rake angle, then the shear stress (τ) will be expressed as:
In an orthogonal machining operation, if U = specific cutting energy, β = friction angle, ϕ = shear plane angle, α = Tool rake angle, then the shear stress (τ) will be expressed as:
Q.43 Correct
Q.43 In-correct
Q.43 Unattempt

For the given kinematic chain the product of the extreme transmission angles expressed in radians is _______rad2

For the given kinematic chain the product of the extreme transmission angles expressed in radians is _______rad2
Q.44 Correct
Q.44 In-correct
Q.44 Unattempt
Two shafts of the same length and material are connected in series, if the ratio of their diameters is 2, then the ratio of their angles of twist will be
Two shafts of the same length and material are connected in series, if the ratio of their diameters is 2, then the ratio of their angles of twist will be
Q.45 Correct
Q.45 In-correct
Q.45 Unattempt
The tool life equation for HSS tool is VT0.14 f0.7 d0.4 = constant. The tool life (T) of 30 min is obtained using the following cutting conditions: V = 45 m/min, feed = 0.35 mm, d = 2.0 mm. If feed (f) and depth of cut (d) are decreased individually by 25% and speed (V) is increased by 25%, the tool life (in min) will be:
The tool life equation for HSS tool is VT0.14 f0.7 d0.4 = constant. The tool life (T) of 30 min is obtained using the following cutting conditions: V = 45 m/min, feed = 0.35 mm, d = 2.0 mm. If feed (f) and depth of cut (d) are decreased individually by 25% and speed (V) is increased by 25%, the tool life (in min) will be:
Q.46 Correct
Q.46 In-correct
Q.46 Unattempt
A 45 kg machine is mounted on four parallel springs each of stiffness 0.2 MN/m. When machine operates at 32 Hz, the machine’s steady state amplitude is measured as 1.5 mm. What is magnitude of excitation force provided to the machine at this speed?
A 45 kg machine is mounted on four parallel springs each of stiffness 0.2 MN/m. When machine operates at 32 Hz, the machine’s steady state amplitude is measured as 1.5 mm. What is magnitude of excitation force provided to the machine at this speed?
Q.47 Correct
Q.47 In-correct
Q.47 Unattempt
A mixture of an ideal gases with total mass of 1 kg is present in a constant volume tank of 1 m3 is stirred by an agitator. Torque produced by an agitator is 200 Nm with 1000 rotation per minute. The tank is completely insulated. Initial pressure in the tank before the agitation is 2 × 105 Pa. Find the change in internal energy and final temperature respectively. (Take Cv = 0.8 kJ/kgK)
A mixture of an ideal gases with total mass of 1 kg is present in a constant volume tank of 1 m3 is stirred by an agitator. Torque produced by an agitator is 200 Nm with 1000 rotation per minute. The tank is completely insulated. Initial pressure in the tank before the agitation is 2 × 105 Pa. Find the change in internal energy and final temperature respectively. (Take Cv = 0.8 kJ/kgK)
Q.48 Correct
Q.48 In-correct
Q.48 Unattempt

For a flow over a flat plate, velocity profile and boundary layer thickness are given by

uU=32(yδ)−12(yδ)2andδx=5xRex,

With U = 3 m/s, ρair = 1.15kg/m3, μ = 1.5 × 10-5 Pa.s,

The shear stress at x = 0.8 m from leading edge is _____× 10-3 N/m2

For a flow over a flat plate, velocity profile and boundary layer thickness are given by

uU=32(yδ)−12(yδ)2andδx=5xRex,

With U = 3 m/s, ρair = 1.15kg/m3, μ = 1.5 × 10-5 Pa.s,

The shear stress at x = 0.8 m from leading edge is _____× 10-3 N/m2
Q.49 Correct
Q.49 In-correct
Q.49 Unattempt

A 200 mm diameter work piece is plain turned over a length of 600 mm in one cut with a tool having Taylor’s tool life equation VT0.35 = 75. The tool changing time is 15 min and feed used is 0.1 mm/rev.

The optimum cutting velocity required for machining the given component using maximum production rate criteria machining is

A 200 mm diameter work piece is plain turned over a length of 600 mm in one cut with a tool having Taylor’s tool life equation VT0.35 = 75. The tool changing time is 15 min and feed used is 0.1 mm/rev.

The optimum cutting velocity required for machining the given component using maximum production rate criteria machining is
Q.50 Correct
Q.50 In-correct
Q.50 Unattempt
Calculate the decrease in available energy (in kJ) when 25 kg of water at 95°C mix with 35 kg of water at 35°C, the pressure being taken as constant and the temperature of the surroundings being 15°C. (Cp of water = 4.2 kJ/kgK) _______
Calculate the decrease in available energy (in kJ) when 25 kg of water at 95°C mix with 35 kg of water at 35°C, the pressure being taken as constant and the temperature of the surroundings being 15°C. (Cp of water = 4.2 kJ/kgK) _______
Q.51 Correct
Q.51 In-correct
Q.51 Unattempt
Air is compressed from 85 kPa and 283 K to 410 kPa, 453 K and gets heated to 723 K in the regenerator in an ideal Brayton cycle with regeneration. Before it enters the turbine, it is further heated to 1300 K. Calculate the effectiveness of the regenerator treating air as an ideal gas ______%
Air is compressed from 85 kPa and 283 K to 410 kPa, 453 K and gets heated to 723 K in the regenerator in an ideal Brayton cycle with regeneration. Before it enters the turbine, it is further heated to 1300 K. Calculate the effectiveness of the regenerator treating air as an ideal gas ______%
Q.52 Correct
Q.52 In-correct
Q.52 Unattempt
A 15 mm diameter drill with point angle 120° is used to drill a through hole in a 30 mm thick assuming the length of approach and over travel to be as 2 mm. The time required for drilling two holes if the feed is 0.1 mm/rev and the material is cut with a velocity of 15 mm/min is _____ min.
A 15 mm diameter drill with point angle 120° is used to drill a through hole in a 30 mm thick assuming the length of approach and over travel to be as 2 mm. The time required for drilling two holes if the feed is 0.1 mm/rev and the material is cut with a velocity of 15 mm/min is _____ min.
Q.53 Correct
Q.53 In-correct
Q.53 Unattempt
A reaction turbine works under a head of 130 metres and at 450 rpm. The flow area is 0.5 m2. The angles made by absolute and relative velocities at inlet are 20° and 60° respectively with the tangential velocity. The hydraulic efficiency of turbine is [Assume zero whirl at outlet and diameter at inlet = 120 cm] 
A reaction turbine works under a head of 130 metres and at 450 rpm. The flow area is 0.5 m2. The angles made by absolute and relative velocities at inlet are 20° and 60° respectively with the tangential velocity. The hydraulic efficiency of turbine is [Assume zero whirl at outlet and diameter at inlet = 120 cm] 
Q.54 Correct
Q.54 In-correct
Q.54 Unattempt

Following data is obtained from a dual combination cycle.

Adiabatic compression ratio = 14 : 1

At the beginning of compression the conditions are 1 bar, 28°C and 0.24 m3,

Max. Pressure of cycle = 57 bar, Heat added in constant pressure = 430 kJ/kg. What is the maximum temperature attained in the cycle? (in K)

Following data is obtained from a dual combination cycle.

Adiabatic compression ratio = 14 : 1

At the beginning of compression the conditions are 1 bar, 28°C and 0.24 m3,

Max. Pressure of cycle = 57 bar, Heat added in constant pressure = 430 kJ/kg. What is the maximum temperature attained in the cycle? (in K)
Q.55 Correct
Q.55 In-correct
Q.55 Unattempt

In ideal vapor compression cycle with R-134a as working fluid, operates between pressure limits 120 kPa and 1000 kPa, the mass fraction of refrigerant that is in liquid phase at inlet to evaporator is ____

P

hf

hg

Sf

Sg

(kPa)

(kJ/kg)

(kJ/kg)

(kJ/kgK)

(kJ/kgK)

120

22.49

236.97

0.0527

0.9477

1000

107.32

270.99

0.3919

0.9156

In ideal vapor compression cycle with R-134a as working fluid, operates between pressure limits 120 kPa and 1000 kPa, the mass fraction of refrigerant that is in liquid phase at inlet to evaporator is ____

P

hf

hg

Sf

Sg

(kPa)

(kJ/kg)

(kJ/kg)

(kJ/kgK)

(kJ/kgK)

120

22.49

236.97

0.0527

0.9477

1000

107.32

270.99

0.3919

0.9156
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