Q.1
In a pure capacitive circuit if the supply frequency is reduced to 1/the current will
  • Be reduced by half
  • Be doubled
  • Be four times at high
  • Be reduced to one fourth
Q.2
All the rules and laws of D.C. circuit also apply to A.C. circuit containing
  • Capacitance only
  • Inductance only
  • Resistance only
  • All above
Q.3
The equation ofHz current sine wave having r.m.s. value ofA is
  • 60 sin 25 t
  • 60 sin 50 t
  • 84.84 sin 3141
  • 42.42 sin 314 t
Q.4
The voltage of domestic supply isV. This figure represents
  • Mean value
  • r.m.s. value
  • Peak value
  • Average value
Q.5
If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be
Q.6
Power factor of the following circuit will be unity
Q.7
The voltage of domestic supply is 220 V. This figure represents
Q.8
Power factor of the following circuit will be zero
Q.9
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
0 h : 0 m : 1 s