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Electric Circuits

Electric Circuits
What will be the rms value of rectangular wave with amplitude 10 V?

 10 V.
 11.2 V.
 5√2 V.
 7.7 V.

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Electric Circuits
If N is the number of nodes and b is the number of branches in a network, then rank of tie set matrix is

 b - N + 1.
 N - 1.
 N.
 b - N - 1.

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Electric Circuits
The synchronous speed for the seventh space harmonic mmf wave of 8 pole, 50 Hz induction machine will be

 5250 rpm in reverse direction.
 5250 rpm in forward direction.
 107.14 rpm in forward direction.
 107.14 rpm in reverse direction.

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Electric Circuits
Container of a lead acid battery

 molded hard rubber.
 celluloid.
 any of above.
 ceramics.

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Electric Circuits
A balanced 3 - φ star connected load is fed from a 208 V, 3 - φ supply. Each load has resistance of 35 Ω. The total power is

 1236 W.
 618 W.
 411.3 W.
 none of these.

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Electric Circuits
A capacitor in a circuit became hot and ultimately exploded due to wrong connection, which type of capacitor it could be?

 Ceramic capacitor.
 Any of above.
 Electrolytic capacitor.
 Paper capacitor.

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