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Alternating Current Test - 32
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Alternating Current Test - 32
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  • Question 1/10
    4 / -1
    A straight conductor of length 0.4m is moved with a speed of 7ms-1 perpindicular to magnetic field of induction 0.9 Wb/m2. The induced e.m.f across the conductor is
    Solutions

  • Question 2/10
    4 / -1
    In an A.C. circuit, the current is i = 5 sin (100t - π/2) amp and the a.c. potential is V = 200 sin (100t) volt. Then, the power consumption is
    Solutions

  • Question 3/10
    4 / -1
    A metal ring is held horizontally and bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is
  • Question 4/10
    4 / -1

    Solutions

  • Question 5/10
    4 / -1
    In the circuit shown in fig what will be the reading of the reading of the voltmeter?

    Solutions

  • Question 6/10
    4 / -1
    In the circuit shown in fig. what will be the readings of voltmeter and ammeter ?

    Solutions

  • Question 7/10
    4 / -1
    In a transformer, np = 500, ns= 5000. Input voltage is 20 V and frequency is 50 Hz. Then in the output, we have
    Solutions

  • Question 8/10
    4 / -1
    In an ac circuit, with voltage V and current I the power dissipated is
    Solutions

  • Question 9/10
    4 / -1
    Two coils have mutual inductance 0.005 H. The current changes in the first coil according to equation I = I0 sin ωt where I0 = 10 A and ω = 100 π rad/ sec. The maximum value of e.m.f in second coil is
    Solutions

  • Question 10/10
    4 / -1
    For high frequency, capacitor offers
    Solutions

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