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Electrical Engineering Objective Questions { Basic Concept of Electricity }

162. Two electrons moving parallel to each other of the same velocity will
A. attract each other if they move in the same direction
B. repel each other ore strongly when moving in same direction than when moving in opposite direction
C. repel each other less strongly when moving in same direction than when moving in opposite direction
D. repel each other with the same force when moving In the same of opposite direction.
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163. Two wires A and B of the same material and length L and 2L have radius r and 2r, respectively. The ratio of their specific resistance will be
A. 1 :1
B. 1 :2
C. 1 :4
D. 1 :8
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164. A 35?V source is connected to a series circuit of 600 ohm and R as shown. If a voltmeter of internal resistance 1.2 kilo ohms is connected caross 600 ohm resistor, it reads 5 V. The value R is 35V
A. 1.2 Id2
D. 7.2 ki2
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165. In a series RLC circuit at resonance, the magnitude of the voltage developed across the capacitor
A. is always zero
B. can never by greater that the input voltage
C. can be greater than the input voltage, however, it is 900 out of phase with the input voltage
D. can be greater than the input voltage, and is in phase with the input voltage.
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166. Two incandescent light bulbs of 40 W and 60W rating are connected in series across the mains. Then
A. the bulbs togetherconsume 100 W
B. the bulbs togetherconsume 50 W
C. the 60 W bulb glows brighter
D. the 40 bulb glows brighter
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167. A current impulse, 58(t), is forced through a capacitor C. The voltage, Vc(t), across the capacitor is given by
A. 5t
B. 5u(t)
D. 5u(t)
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168. The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper tube of 60 mm diameter is
A. 3.2 pH
B.3.2 mH
C. 32.0 mH
D. 3.2 H
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