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- Question
A 470 Ω resistor and a coil with 125 Ω inductive reactance are in parallel. Both components are across a 15 V ac voltage source. Current through the inductor is
Options- A. 152 mA
- B. 32 mA
- C. 12 mA
- D. 120 mA
- Correct Answer
- 120 mA
- 1. The current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is
Options- A. 1.8 mV
- B. 18 mV
- C. 180 mV
- D. 1.25 mV Discuss
- 2. A Wheatstone bridge consists of four resistors in parallel.
Options- A. True
- B. False Discuss
- 3. A resistor normally opens when it burns out.
Options- A. True
- B. False Discuss
- 4. The branch current method is based on Kirchhoff's voltage law and Kirchhoff's current law.
Options- A. True
- B. False Discuss
- 5. The watt is the unit of power.
Options- A. True
- B. False Discuss
- 6. In an RL low-pass filter, the output voltage is taken across the inductor and the output lags the input.
Options- A. True
- B. False Discuss
- 7. Find I1. 4I1 + 4I2 = 2
6I1 + 7I2 = 4
Options- A. 0.5 A
- B. 50 mA
- C. ?0.5 A
- D. ?50 mA Discuss
- 8. A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is
Options- A. 45.12 mA
- B. 16 mA
- C. 39.6 mA
- D. 22.6 mA Discuss
- 9. The ability of a material to remain magnetized after removal of the magnetizing force is known as
Options- A. permeability
- B. reluctance
- C. hysteresis
- D. retentivity Discuss
- 10. If the rms current through a 6.8 kΩ resistor is 8 mA, the rms voltage drop across the resistor is
Options- A. 5.44 V
- B. 54.4 V
- C. 7.07 V
- D. 8 V Discuss
More questions
Correct Answer: 18 mV
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: ?0.5 A
Correct Answer: 39.6 mA
Correct Answer: retentivity
Correct Answer: 54.4 V
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