Electrical Circuits

61. For a carbon composition resistor, typical resistance values range from

1. 2.7 Ω to 22 M Ω
2. 1000 Ω to 10000 Ω
3. 10 Ω to 10 Mn
4. 2.7 Ω to 2.7 Gn

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62. For a linear circuit, __________ voltage or current is used to calculate average power.

1. Rms
2. Peak
3. Average
4. Instantaneous

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63. For a parallel AC circuit, Ω is used as a reference phasor.

1. Voltage
2. Power
3. Current
4. Resistance

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64. For a series AC circuit, Ω is not used as a reference phasor.

1. Voltage
2. Impedance
3. Current
4. Conductance

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65. For a series circuit, the higher the quality factor

1. The greater the bandwidth
2. The narrower the passband
3. The broader the resonance curve
4. The wider the passband

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66. For a triangular and sawtooth waveform the rms voltage or current equals

1. 0.707 times peak value
2. 0.577 times peak value
3. 0.577 times average value
4. 0.707 times rms value

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67. For greater accuracy, the value of phase angle 8 should be determined from

1. Cos 8
2. Tan 0
3. Sin 8
4. Sec 8

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68. For maximum power transfer, what is the relation between load resistance RL and internal resistance R of the voltage source?

1. R_L = 2 r
2. R_L = 1.5 r
3. R_L = r
4. R_L = 3 r

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69. For multi-plate capacitor, capacitance is proportional to

1. Number of plates less one(n - 1)
2. Number of plates plus one(n + 1)
3. Number of plates less two(n - 2)
4. Number of plates (n)

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70. For parallel capacitors, total charge is

1. The sum of individual charges
2. Equal to the charge of either capacitors
3. Equal to the product of the charges
4. The quotient of the charges

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