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.Management Sciences
Category: A.C. Fundamentals, Circuits and Circuit Theory
The ratio of active power to apparent power is known as factor__________?
A. demand
B. load
C. power
D. form
The best place to install a capacitor is___________?
A. very near to inductive load
B. across the terminals of the inductive load
C. far away from the inductive load
D. any where
In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value__________?
A. will change the maximum value of current at resonance
B. will change the resonance frequency
C. will change the impedance at resonance frequency
D. will increase the selectivity of the circuit
At very low frequencies a series R-C circuit behaves as almost purely___________?
A. resistive
B. inductive
C. capacitive
D. none of the above
The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces__________?
A. the more heat than produced by A.C. when flowing through the same circuit
B. the same heat as produced by A.C. when flowing through the same circuit
C. the less heat than produced by A.C. flowing through the same circuit
D. none of the above
Time constant of an inductive circuit_________?
A. increases with increase of inductance and decrease of resistance
B. increases with the increase of inductance and the increase of resistance
C. increases with the decrease of inductance and decrease of resistance
D. increases with decrease of inductance and increase of resistance
The safest value of current the human body can carry for more than 3 second is_________?
A. 4 mA
B. 9 mA
C. 15 mA
D. 25 mA
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