Electrical Circuits

51. At parallel resonance, the currents flowing through L and C are

1. Infinite
2. Zero
3. Unequal
4. Equal

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52. At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 μF?

1. 7.12 kHz
2. 7.12 Hz
3. 7.12MHz
4. 7.12 GHz

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53. At what frequency will the current in a series RLC circuit reach its maximum value for an applied voltage of 15 V with R = 500 n, L = 100 μH and C = 0.001 μF?

1. 503 kHz
2. 403 kHz
3. 603 kHz
4. 303 kHz

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54. Barium-strontium titanite dielectric material is also called

1. Ceramic
2. Polyster
3. Electrolytic
4. Bakelite

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55. Capacitance increase with

1. Larger plate area and less distance between plates
2. Larger plate area and greater distance between plates
3. Smaller plate area and less distance between plates
4. Higher values of applied voltage

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56. Conventional flow assumes charges flow from

1. Positive to negative
2. Positive to positive
3. Negative to positive
4. Negative to negative

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57. Delta to wye or wye to delta transformation technique is applied to a network.

1. One-terminal
2. Two-terminal
3. Three-terminal
4. Complex

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58. Effects of capacitance

1. It opposes any change in the amount of voltage
2. Voltage is lagged behind the current by a quarter cycle
3. Electric energy is stored in the capacitor in the form of electrostatic field
4. All of the above

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59. Electric energy refers to

1. Volt divided by coulomb
2. Volt-ampere
3. Volt-coulomb
4. Watt divided by time

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60. Electron flow assumes charges flow from

1. Negative to positive
2. Negative to negative
3. Positive to negative
4. Positive to positive

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