Q.1.
A coil of inductanceH, resistanceΩ is connected as shown in the figure. The switch S connected with point 1 for a very long time, is moved to point 2 at t=If, at t=0+, the voltage across the coil isV, the value of the resistance R is __________
- a) Zero
- b) 20 Ω
- c) 40 Ω
- d) 60 Ω
Q.2.
A coil of inductanceH, resistanceΩ is connected as shown in figure. The switch S connected with point 1 for a very long time, is moved to point 2 at t=For the value of R obtained, the time taken for% of the stored energy dissipated is ________
- a) 0.10 s
- b) 0.15 s
- c) 0.50 s
- d) 1.0 s
Q.3.
In the circuit shown below steady state is obtained before the switch closes at t =The switch is closed for 1.5 s and is then opened. At t = 1 s, V (t) will be?
- a) – 3.24 V
- b) 1.97 V
- c) 5.03 V
- d) 13.24 V
Q.4.
The circuit shown below is at steady state before the switch closes at t=The switch is closed for 1.5 s and is then opened. At t = 2 s, V (t) will be?
- a) 5.12 V
- b) 6.43 V
- c) 8.57 V
- d) 9.88 V
Q.5.
In the circuit given below, the voltage across capacitor when switch is closed at t = ∞ is ____________
- a) 50 V
- b) 20 V
- c) 30 V
- d) 7.5 V
Q.6.
In the circuit given below, the current source is 1 A, voltage source is 5 V, R1 = R2 = R3 = 1 Ω, L1 = L2 = L3 = 1 H, C1 = C2 = 1 F. The current through R3 is _________
- a) 1 A
- b) 5 A
- c) 6 A
- d) 8 A
Q.7.
In the circuit given below, the capacitor is initially having a charge ofC. 1 second after the switch is closed, the current in the circuit is ________
- a) 14.7 A
- b) 18.5 A
- c) 40.0 A
- d) 50.0 A
Q.8.
In the circuit given below, the current source is 1 A, voltage source is 5 V, R1 = R2 = R3 = 1 Ω, L1 = L2 = L3 = 1 H, C1 = C2 = 1 F. The current through the voltage source V is _________
- a) 1 A
- b) 3 A
- c) 2 A
- d) 4 A
Q.9.
In the circuit given below, the voltage across R by mesh analysis is _________
- a) 1.59 V
- b) 1 V
- c) 2.54 V
- d) 1.54 V
Q.10.
In a dual slop integrating type digital voltmeter, the first integrating is carried out forperiods of the supply frequency ofHz. If the reference voltage used is 2 V, the total conversion time for an input of 1 V is _________
- a) 0.01 s
- b) 0.05 s
- c) 0.1 s
- d) 1 s
Q.11.
A rectifier type AC voltmeter consists of a series resistance R, an ideal full-wave rectifier bridge and a PMMC instrument. The internal resistance and a full-scale deflection produced by a DC current areΩ and 1 mA respectively. A voltage ofV (rms) is applied to the input terminals. The value of R required is _________
- a) 63.56 Ω
- b) 89.83 Ω
- c) 89.83 kΩ
- d) 141.3 kΩ
Q.12.
A 1 μF capacitor is connected across aV battery. The battery is kept closed for a long time. The circuit current and voltage across capacitor is __________
- a) 0.5 A and 0 V
- b) 0 A and 50 V
- c) 20 A and 5 V
- d) 0.05 A and 5 V
Q.13.
In the circuit given below, the switch is closed at t =At t =the current through C is ___________
- a) 2 A
- b) 3 A
- c) 4 A
- d) 5 A
Q.14.
A resistance R is measured using the connection shown in the below figure.
- a) 12.75 Ω
- b) 12.0 Ω
- c) 12.25 Ω
- d) 12.5 Ω