Q.1
The circuit whose properties are same in either direction is known as
Q.2
For a voltage source
Q.3
Between the branch voltages of a loop the Kirchhoff's voltage law imposes
Q.4
Which of the following is a bilateral element?
Q.5
Kirchhoff s law is not applicable to circuits with
Q.6
RMS value of i(t) = 10[1 + sin (- t)] is
  • 10
  • 10/2
  • l50
  • 102
Q.7
A capacitor is needed for an ac circuit ofV,Hz the peak voltage rating of the capacitor should be
  • 230 V
  • 0.5 x 230 V
  • 2 x 230V
  • 230/2V
Q.8
A sinusoidal voltage has peak to peak value ofV. The rms value is
  • 50 V
  • 70.7 V
  • 35.35 V
  • 141.41 V
Q.9
The electrical energy required to heat a bucket of water to a certain temperature is 2 kWh. If heat losses, are 25%, the energy input is
  • 2.67 kWh
  • 3 kWh
  • 2.5 kWh
  • 3.5 kWh
Q.10
The current rating of a cable depends on
  • length of cable
  • diameter of cable
  • both length and diameter of cable
  • none of the above
Q.11
In an ac circuit, the maximum and minimum values of power factor can be
  • 2 and 0
  • 1 and 0
  • 0 and -1
  • 1 and -1
Q.12
As compared to the number of network elements in Brune synthesis, the number of network elements Bott-and Duffin in realization is
  • more
  • less
  • equal
  • any of the above
Q.13
A current is flowing through a conductor with non-uniform area of cross-section. Then
  • current will be different at different cross-sections.
  • current will be the same at all the cross-sections.
  • current will be different but current density will be same at all the cross-sections
  • current will be the same but current density will be different at different cross-sections.
Q.14
The impedance of an RC series circuit isΩ at f=Hz. At f=Hz, the impedance will be
  • more than 12
  • less than 3
  • more than 3 Ω but less than 12 Ω
  • more than 12 Ω but less than 24 Ω
Q.15
Which of the following is correct for a driving point functions?
  • The real parts of all poles must be negative
  • The real parts of all poles and zeros must be negative
  • The real parts of all poles and zeros must be negative or zero
  • The real parts of all zeros must be negative
Q.16
A 3 phase balanced supply feeds 3 phase unbalanced load. Power supplied to the load can be measured by using 2 wattmeterone wattmeter3 wattmeter Which of the above statements is correct?
  • 1 and 2
  • 1 and 3
  • 2 and 3
  • 3 alone
Q.17
C = ((energy)/V2
  • True
  • False
Q.18
A capacitor stores 0.at 5 V. Its capacitance is
  • 0.75 F
  • 0.75 μF
  • 0.03 F
  • 0.03 μF
Q.19
A series RC circuit has R = 5 Ω and C =μF. The current in the circuit is 5 sin 20000t. The applied voltage is
  • 252 sin (20000t + 45°)
  • 252 sin (20000t - 45°)
  • 252 sin 20000t
  • 252 sin (20000t - 90°)
Q.20
A 0.5 μF capacitor is connected across aV battery. After a long time, the circuit current and voltage across capacitor will be
  • 0.5 A and 0 V
  • 0 A and 10 V
  • 20 A and 5 V
  • 0.05 A and 5 V
0 h : 0 m : 1 s