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

A. current lags behind the voltage by 90°
B. current leads the voltage by 90°
C. current can lead or lag the voltage by 90°
D. current is in phase with the voltage

A. 282.8 V
B. 141.4 V
C. 111 V
D. 100 V

A. reduces load handling capability of electrical system
B. results in more power losses in the electrical system
C. overloads alternators, transformers and distribution lines
D. results in more voltage drop in the line
E. results in all above

A. reduce eddy current loss
B. increase heat radiation
C. make assembly cheap and easier
D. reduce circuit permeability

A. can dissipate considerable amount of power
B. can act as energy storage devices
C. connecting them in parallel in¬creases the total value
D. oppose sudden changes in voltage

A. inductance
B. capacitance
C. resistance
D. both A. and B.

A. both will reach their minimum values at the same instant
B. both will reach their maximum values at the same instant
C. when one wave reaches its maxi¬mum value, the other will reach its minimum value
D. none of the above

A. lags
B. leads
C. remains in phase with
D. none of the above

A. apparent power
B. true power
C. reactive power
D. none of the above

A. unsymmetrical part of the wave form
B. the quarter cycle
C. the half cycle
D. the whole cycle