|
41
|
The voltage of domestic supply is 220 V. This
figure represents- r.m.s. value [other wrong options are – Mean value, Peak value, Average value, ] |
|
42
|
The shunt element of prototype high pass filter
is Inductive [other wrong options are – Resistive, Capacitive, Combination of L and C, ] |
|
43
|
Which of the following statement is incorrect ?
Current source is a passive element [other wrong options are – Resistance is a passive element, Voltage source is an active element, Conductance is a passive element, ] |
|
44
|
In a series resonant circuit, the impedance of
the circuit is Minimum [other wrong options are – Maximum, Zero, Infinite, ] |
|
45
|
Ohm is the unit of all of the following except
Capacitance [other wrong options are – Inductive reactance, Capacitive reactance, Resistance, ] |
|
46
|
Skin effect occurs when a conductor carries
current at____ frequencies. High [other wrong options are – Very low, Low, Medium, ] |
|
47
|
The time constant of a series R-C circuit is
given by RC [other wrong options are – R/C, RC2, R2C, ] |
|
48
|
The double energy transient occur in the
R-L-C circuit [other wrong options are – Purely inductive circuit, R-L circuit, R-C circuit, ] |
|
49
|
In a series resonant circuit, the impedance of
the circuit is Minimum [other wrong options are – Maximum, Zero, None of the above, ] |
|
50
|
Form factor for a sine wave is
1.11 [other wrong options are – 1.414, 0.707, 0.637, ] |
|
51
|
The r.m.s. value of a sine wave is 100A. Its peak
value is 70.7 A [other wrong options are – 141.4A, 150A, 282.8 A, ] |
|
52
|
The power factor of incandescent bulb is
Unity [other wrong options are – 0.8 lagging, 0.8 leading, Zero, ] |
|
53
|
The shunt element in a band pass filter is
Parallel combination of L and C [other wrong options are – Capacitive, Inductive, Series combination of L and C, ] |
|
54
|
The ratio of the bandwidth to the resonance
frequency is called the____ of the circuit. Selectivity [other wrong options are – Impedance, Susceptance, Quality factor, ] |
|
55
|
In A.C. circuit the power curve is a sine wave
having Double the frequency of voltage [other wrong options are – Same frequency as that of voltage, Half the frequency of the voltage, None of these, ] |
|
56
|
The r.m.s. value of pure cosine function is
0.707 of peak value [other wrong options are – 0.5 of peak value, Same as peak value, Zero, ] |
|
57
|
At very low frequencies a series R-C circuit behaves
as almost purely____ Capacitive [other wrong options are – Resistive, Inductive, None of these, ] |
|
58
|
In a R-L-C series circuit if voltage V across the
circuit is reduced to half the current I will change to I/2 [other wrong options are – 2 I, 3/4 I, 5/8 I, ] |
|
59
|
In the R – L – C containing R = 4.5ω L = 0.06 H,C
= 0.6 µF the power factor will be Leading [other wrong options are – Zero, Lagging, Unity, ] |
|
60
|
Capacitive reactance is more when
Capacitance’sis less and frequency of supply is less [other wrong options are – Capacitance is less and frequency of supply is more, Capacitance is more and frequency of supply is less, Capacitance is more and frequency of supply is more, ] |