a) Infinity b) Zero c) Very small d) Large Ans: (c)
a) Zero b) Very high c) Infinity d) Very small Ans: (b)
a) Moving coil instruments b) Induction type instruments c) Permanent magnet instruments d) Hotwire instruments Ans: (d)
a) Zero b) Unity c) Less than unity d) More than unity Ans: (d)
a) Polarity of the impulse voltage b) Steepness of the impulse wave-front c) Time of decay of the impulse voltage d) All the above Ans: (d)
a) Lenz’s Law b) Biot Law c) Biot and Savart’s Law d) Ampere’s Theorem Ans: (c)
a) Radius of the solenoid is more than length b) Radius of the solenoid is much less than its length c) Radius of the solenoid is equal to length of the solenoid d) Number of turns are unlimited Ans: (b)
a) Permeability b) Incremental permeability c) Flux density d) Incremental magnetization force Ans: (b)
a) LT-2 b) MLT-2 c) ε1/2 L3/2 M1/2 T-1 d) LT-1 Ans: (c)
a) LT-2 b) MLT-2 c) ε1/2 L3/2 M1/2 T-2 d) ε1/2 L2 M-1/2 T2 Ans: (c)