| 1. | For the same peak value, which of the following waves has the least mean value ? | |
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sine wave
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square wave
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half wave rectified sine wave
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triangular waves
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Report Question| 2. | "Maximum power output is obtained from a network when the load resis tance is equal to the output resis tance of the network as seen from the terminals of the load". The above statement is associated with ? | |
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Superposition theorem
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Maximum power transfer theorem
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Millman's theorem
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Thevenin's theorem
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| 3. | In series resonant ci inductance to its twice value and reducing capacitance to its half value bus ? | |
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will change the impedance at resonance frequency IL
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will increase the selectivity of the circuit
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will change the maximum value of current at resonance
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will change the resonance frequency
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| 4. | The double energy transient occur in the ? | |
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R-C circuit
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R-L-C circuit
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purely inductive circuit
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R-L circuit
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| 5. | A pure inductance connected across 250 V, 50 Hz supply consumes 100 W. This consumption can be attributed to ? | |
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the current flowing in the inductor
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the statement given is false
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the big size of the inductor
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the reactance of the inductor
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| 6. | In a R-L-C series circuit if voltage V across the circuit is reduced to half the current I will change to ? | |
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3/4I
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5/8I
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2I
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I/2
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| 7. | The phase difference between them is ..... degrees ? | |
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60
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105
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15
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50
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| 8. | In the R-L-C circuit containing R = 4.5 W, L 0.006 H, C = 0.6 F the power factor will be ? | |
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leading
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unity
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zero
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lagging
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| 9. | The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA. The power drawn by the circuit is ? | |
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32 kW
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64 Kw
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12 kW
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22 kW
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| 10. | In a loss-free R-L-C circuit the transient current is ? | |
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sinusoidal
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non-oscillating
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oscillating
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square wave
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