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- Question
The first row of a certain determinant has the numbers 3 and 5. The second row has the numbers 7 and 2. The value of this determinant is
Options- A. 31
- B. ?31
- C. 39
- D. ?29
- Correct Answer
- ?29
- 1. A steady-state condition is reached when
Options- A. the output voltage reaches the average value of the input voltage
- B. the output voltage reaches the input voltage
- C. the output voltage reaches approximately 63% of the input voltage
- D. the output voltage reaches the effective value of the input voltage Discuss
- 2. When a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges to
Options- A. 15 V
- B. 12.9 V
- C. 8.6 V
- D. 19.45 V Discuss
- 3. The power dissipation in each of four parallel branches is 1.2 W. The total power dissipation is
Options- A. 1.2 W
- B. 4.8 W
- C. 0.3 W
- D. 12 W Discuss
- 4. A three-phase △-connected generator is driving a balanced load such that each phase current is 12 A in magnitude. When I ?a = 12 ∠30° A, what are the polar expressions for the other phase currents?
Options- A. I ?b = 12 ∠150° A, I ?c = 12∠?90° A
- B. I ?b = 12∠120° A, I ?c = 12∠30° A
- C. I ?b = 12∠30° A, I ?c = 12∠120° A
- D. I ?b = 12∠90° A, I ?c = 12∠90° A Discuss
- 5. A 6 V battery is connected to a 300 Ω load. Under these conditions, it is rated at 40 Ah. How long can it supply current to the load?
Options- A. 1 h
- B. 200 h
- C. 2,000 h
- D. 10 h Discuss
- 6. Total parallel capacitance is less than that of the smallest capacitor in parallel.
Options- A. True
- B. False Discuss
- 7. A 120 Ω load is connected across a voltage source with VS = 12 V and RS = 8 Ω. The voltage across the load is
Options- A. 11.25 V
- B. 0 V
- C. 12 V
- D. 1.13 V Discuss
- 8. Find RN for the circuit given.
Options- A. 34 Ω
- B. 68 Ω
- C. 120 Ω
- D. 154 Ω Discuss
- 9. A 120 V voltage source has a source resistance, RS, of 60 Ω. The equivalent current source is
Options- A. 2 A
- B. 4 A
- C. 200 mA
- D. 400 mA Discuss
- 10. When the plate area of a capacitor increases,
Options- A. the capacitance increases
- B. the capacitance decreases
- C. the capacitance is unaffected
- D. the voltage it can withstand increases. Discuss
More questions
Correct Answer: the output voltage reaches the average value of the input voltage
Correct Answer: 12.9 V
Correct Answer: 4.8 W
Correct Answer: I ?b = 12 ∠150° A, I ?c = 12∠?90° A
Correct Answer: 2,000 h
Correct Answer: False
Correct Answer: 11.25 V
Correct Answer: 154 Ω
Correct Answer: 2 A
Correct Answer: the capacitance increases
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