Skin effect occurs when a conductor carries current at_______ frequencies
Skin effect occurs when a conductor carries current at_______ frequencies
A. very low
B. low
C. medium
D. high
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The period of a wave is___________?
The period of a wave is___________?A. the same as frequency
B. time required to complete one cycle
C. expressed in amperes
D. none of the aboveInductance of a coil Varies__________?
Inductance of a coil Varies__________?A. directly as the cross-sectional area of magnetic core
B. directly as square of number of turns
C. directly as the permeability of the core
D. inversely as the length of the iron path
E. as A. to (d)At very low frequencies a series R-C circuit behaves as almost purely___________?
At very low frequencies a series R-C circuit behaves as almost purely___________?A. resistive
B. inductive
C. capacitive
D. none of the aboveTime constant of an inductive circuit___________?
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 decrease of inductance and decrease of resistance
D. increases with decrease of inductance and increase of resistanceWhich of the following circuit component opposes the change in the circuit voltage ?
Which of the following circuit component opposes the change in the circuit voltage ?A. Inductance
B. Capacitance
C. Conductance
D. ResistanceThe ratio of active power to apparent power is known as factor__________?
The ratio of active power to apparent power is known as factor__________?A. demand
B. load
C. power
D. form