EE SHORT NOTES-A.C. FUNDAMENTALS 5

81
The r.m.s. value of a half-wave rectified current
is 100 A. Its value for full-wave 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, ]
                              Part 1  Part 2   Part 3  Part 4  Part 5

EE AND ECE SHORT NOTES-Measurement and Instrumentation 1
EE SHORT NOTES-A.C. FUNDAMENTALS 4

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