81

The r.m.s. value of a halfwave rectified current
is 100 A. Its value for fullwave rectification would be____ amperes. 141.4 [other wrong options are – 200, 200/π, 40/π, ] 
82

For the same peak value, which of the following
wave has the least mean value ? Half wave rectified sine wave [other wrong options are – Triangular wave, Sine wave, Square wave, ] 
83

The time period of a sine wave is 1/50 seconds.
Its frequency is 50 Hz [other wrong options are – 20 Hz, 30 Hz, 40 Hz, ] 
84

For the same peak value of voltage which wave
form will have the least r.m.s. value ? Triangular wave [other wrong options are – Sine wave, Square wave, Full wave rectified sine wave, ] 
85

The series element of a band stop filter is
Parallel combination of L and C [other wrong options are – Capacitive, Inductive, Series combination of L and C, ] 
86

Selectivities of different resonance circuits are
compared in terms of their Band widths [other wrong options are – Impedances, Reactances, Frequencies, ] 
87

While drawing vector diagram for a series circuit
the reference vector is Current [other wrong options are – Voltage, Power, Phase angle, ] 
88

Which of the following waves has the highest
value of peak factor ‘? Half wave rectifier sine wave [other wrong options are – Square wave, Sine wave, Triangular wave, ] 
89

The ratio of active power to apparent power is
known as ____ factor. Power [other wrong options are – Demand, Load, Form, ] 
90

Which of the following circuit component opposes
the change in the circuit voltage Capacitance [other wrong options are – Inductance, Conductance, Resistance, ] 
91

Power factor of an inductive circuit is usually
improved by connecting capacitor to it in Parallel [other wrong options are – Series, Either (A) or (B), None, ] 
92

For the same peak value which of the following
wave will have the highest r.m.s. value ? Square wave [other wrong options are – Half wave rectified sine wave, Triangular wave, Sine wave, ] 