Category: A.C. Fundamentals, Circuits and Circuit Theory

A. ratio of net reactance and impedance
B. ratio of kW and kVA
C. ratio of J and Z
D. ratio of W and VA

A. reactive power in a circuit
B. the extent of neutralisation of reactive power in a circuit
C. a purely capacitive circuit’s ability to pass current
D. a purely capacitive circuit’s ability to resist the flow of current

A. 0.636 Emax
B. 0.707 Emax
C. 0.434 EWc
D. lAUEmax

A. series resistance needs a low-resistance source for sharp rise in current
B. series resonance needs a high-resistance source for sharp increase in current
C. parallel resonance needs a low-resistance source for a sharp in¬crease in impedance
D. parallel resonance needs a low-resistance source for a sharp rise in line current

A. true power
B. reactive power
C. volt-amperes
D. instantaneous power

A. low efficiency
B. high power factor
C. unity power factor
D. maximum load current

A. is unaffected by the supply frequency
B. decreases with the increase in supply frequency
C. increases with the increase in supply frequency
D. becomes zero with the increase in supply frequency

A. 90
B. 60
C. 45
D. 30

A. purely inductive circuit
B. R-L circuit
C. R-C circuit
D. R-L-C circuit

A. 12 kW
B. 22 kW
C. 32 kW
D. 64 kW