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- Question
Three 10 kΩ resistors are connected in series. A 20 kΩ resistor is connected in parallel across one of the 10 kΩ resistors. The voltage source is 24 V. The total current in the circuit is
Options- A. 900 µA
- B. 9 mA
- C. 90 mA
- D. 800 µA
- Correct Answer
- 900 µA
- 1. A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
Options- A. 212 Ω
- B. 2.12 mS + j3.14 mS
- C. 3.14 mS + j2.12 mS
- D. 318.3 Ω Discuss
- 2. Find the current through R1 in the given circuit.
Options- A. 0.16 A
- B. 0.24 A
- C. 0.2 A
- D. 0.04 A Discuss
- 3. In a certain three-wire Y-connected generator, the phase voltages are 2 kV. The magnitudes of the line voltages are
Options- A. 2,000 V
- B. 6,000 V
- C. 666 V
- D. 3,464 V Discuss
- 4. A two-phase generator is connected to two 90 Ω load resistors. Each coil generates 120 V ac. A common neutral line exists. How much current flows through the common neutral line?
Options- A. 1.33 A
- B. 1.88 A
- C. 2.66 A
- D. 1.77 A Discuss
- 5. How much resistance is required to limit the current from a 12 V battery to 3.6 mA?
Options- A. 3.3 kΩ
- B. 33 kΩ
- C. 2.2 kΩ
- D. 22 kΩ Discuss
- 6. A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms.
Options- A. 40 Ω
- B. 4 Ω
- C. 2 Ω
- D. 20 Ω Discuss
- 7. In a △-connected generator, there is a 120° difference between each line current and the nearest phase current.
Options- A. True
- B. False Discuss
- 8. An RC high-pass filter consists of an 820 Ω resistor. What is the value of C so that Xc is ten times less than R at an input frequency of 12 kHz?
Options- A. 81 µF
- B. 161 µF
- C. 0.161 µF
- D. 220 µF Discuss
- 9. Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is
Options- A. 16.54 V
- B. 1.65 V
- C. 10.60 V
- D. 5.93 V Discuss
- 10. To derive 18 V and 12 V from a 24 V supply requires a voltage divider with three taps.
Options- A. True
- B. False Discuss
More questions
Correct Answer: 2.12 mS + j3.14 mS
Correct Answer: 0.16 A
Correct Answer: 3,464 V
Correct Answer: 1.77 A
Correct Answer: 3.3 kΩ
Correct Answer: 20 Ω
Correct Answer: False
Correct Answer: 0.161 µF
Correct Answer: 16.54 V
Correct Answer: True
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