Electrical Circuits

161. The open-circuit voltage at the terminal of load RL is 60V. Under the condition of maximum power transfer, the load voltage will be

1. 60 V
2. 15 V
3. 20 V
4. 30 V

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162. The potential gradient in a cable is maximum in

1. Conductor
2. Outer sheath
3. Insulation
4. Uniformly all over

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163. The power factor of a certain circuit in which the voltage lags behind the current is 80 %. To increase the power to 100 %, it is necessary to add to the circuit.

1. Inductance
2. Capacitance
3. Resistance
4. Impedance

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164. The power factor of a circuit is equal to

1. RZ
2. XC/Z
3. XL/Z
4. R/Z

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165. The presence of an electric current is made known by

1. Electric shock
2. Effects produced
3. Magnetic shock
4. Flashing

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166. The Q-factor of a parallel resonant circuit is also known as

1. Current magnification factor
2. Voltage magnification factor
3. Load factor
4. Leakage factor

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167. The Q-factor of a series resonant circuit is also known as

1. Current magnification factor
2. Voltage magnification factor
3. Load factor
4. Leakage factor

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168. The ratio between the active power and the apparent power of a load in an ac circuit is called

1. Quality factor
2. Power factor
3. Power ratio
4. Power reactive

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169. The ratio between the reactive power and the apparent power of an ac load is called

1. Quality factor
2. Power factor
3. Power ratio
4. Reactive power

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170. The ratio of maximum value to the effective value of an alternating quantity is called

1. Form factor
2. Peak factor
3. Dynamic factor
4. Leakage factor

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