Electrical Circuits

41. An inductive circuit of resistance 16.5 Ω and inductance of 0.14 H takes a current

1. 25 A. if the frequency is 50 Hz, find the supply voltage. A. 1501 V
2. 1174 V
3. 1877 V
4. 991 V

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42. An inductive load always has a power factor

1. Leading
2. Lagging
3. Zero
4. Unity

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43. An inductor carries 2 A dc. If its inductance is 100 μH, then what is its inductive reactance?

1. Zero
2. 1.3 kΩ
3. 628 Ω
4. -628 Ω

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44. An intermittent and non-symmetrical alternating current like that obtained from the secondary winding of an induction coil

1. Faradic current
2. Transient ac current
3. Inductive current
4. Capacitive current

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45. An open inductor has

1. Zero resistance and infinite inductance
2. Infinite resistance and zero inductance
3. Infinite resistance and infinite inductance
4. Zero resistance and zero inductance

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46. An open resistor when checked with an ohmmeter reads

1. Zero
2. Infinite
3. High but within the tolerance
4. Low but not zero

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47. And ideal current source has an internal conductance of __________ siemen(s)

1. Infinite
2. One
3. Zero
4. One million

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48. Another term for superconductor.

1. Generic conductor
2. Ultraconductor
3. Cryotron
4. Cryogenic conductor

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49. Another term of the quality factor of the resonant circuit.

1. Figure of merit
2. Figure of demerit
3. Noise factor
4. Noise figure

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50. As applied to a series RLC circuit, bandwidth means

1. The frequency range for maximum power transfer
2. The difference between the highest and lowest frequencies of the oscillator
3. The separation of the half-power points
4. The frequency at which XL = XC

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