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Electric Circuits

Electric Circuits
Which cell has the reversible chemical reaction?

 Mercury oxide.
 Lead acid.
 Silver oxide.
 Carbon Zinc.

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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

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

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Electric Circuits
A capacitor carries a charge of 0.3 C at 20 V. Its capacitance is

 15 μF.
 1.5 μF.
 1.5 F.
 0.015 F.

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Electric Circuits
Capacitor does not allow the sudden change of

 voltage
 power
 current
None of these

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Electric Circuits
A two port network is defined by the relation The value of Z11 is

 2/11.
 2.
 -3.
 -2/11.

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Electric Circuits
Consider the following circuit. What is the value of current I in the 5 Ω resistor in the circuit given in the figure?

 4 A.
 3 A.
 2 A.
 0 A.

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