Question – 1
1. Primary batteries are designed to be __________ and discarded when they are exhausted.
- A. recharged over and over
- B. used once
- C. charged once
- D. stored multiple times
- Answer:B
- Answer Explanation:
Question – 2
2. Which of the following is not a characteristic feature of a field effect transistor?
- A. low input impedance
- B. a reverse-biased PN junction
- C. low power consumption
- D. high input impedance
- Answer:A
- Answer Explanation:
Question – 3
3. In practical applications, what would happen to battery voltage?
- A. Voltage is reduced to zero
- B. Voltage is restored as soon as disconnected
- C. Voltage is stored indefinitely
- D. Voltage is lowered as load increases
- Answer:D
- Answer Explanation:
Question – 4
4. The needle will __________ when an open capacitor is checked with an ohmmeter.
- A. stay on infinity
- B. move from zero to infinity
- C. move from infinity to zero
- D. stay on zero
- Answer:A
- Answer Explanation:
Question – 5
5. Find the Q (Quality factor) of a series circuit that resonates at 6 kHz, has equal reactance of 7 kilo-ohms each and a resistor value of 50 ohms?
- A. 0.0014
- B. 140
- C. 8600
- D. 7.0
- Answer:B
- Answer Explanation:
Question – 6
6. Which one of the following is an example of a series dissipative regulator?
- A. shunt regulator
- B. dc-to-dc converter
- C. linear regulator
- D. switching regulator
- Answer:C
- Answer Explanation:
Question – 7
7. ___________ is an example of potential energy.
- A. A battery
- B. The sun
- C. A kettle
- D. A vehicle
- Answer:A
- Answer Explanation:
Question – 8
8. The signal is _________, if current varies periodically from zero to a maximum, back to zero, and then repeats.
- A. repetitive
- B. pulsating
- C. alternating
- D. direct
- Answer:B
- Answer Explanation:
Question – 9
9. Find the impedance for XL= 100?? and R = 100??.
- A. 14.14 ??
- B. 150 ??
- C. 141.4 ??
- D. 100 ??
- Answer:C
- Answer Explanation:
Question – 10
10. __________ is the fourth harmonic of a fundamental frequency of 600 Hz.
- A. 4 kHz
- B. 4 Hz
- C. 2.4 kHz
- D. 100 Hz
- Answer:C
- Answer Explanation:
Question – 11
11. What is meant by half splitting?
- A. Isolating a problem in a circuit
- B. Limiting current in a circuit
- C. Reducing a high ac voltage to a low dc voltage
- D. Nuclear fuel cells to produce electricity
- Answer:A
- Answer Explanation:
Question – 12
12. Find the kilowatt-hour consumption of a 30 W lamp if it remains ON for 1600 h?
- A. 43.75
- B. 4.37
- C. 48
- D. 40
- Answer:C
- Answer Explanation:
Question – 13
13. A voltmeter is used
- A. to measure coulombs
- B. in series with the circuit
- C. to measure current
- D. in parallel with the circuit
- Answer:D
- Answer Explanation:
Question – 14
14. ___________ are the types of basic adder circuits.
- A. Asynchronous and synchronous
- B. Half adder and full adder
- C. Half adder and parallel adder
- D. One’s complement and two’s complement
- Answer:B
- Answer Explanation:
Question – 15
15. CRT oscilloscope displays __________.
- A. rms voltage and current
- B. frequency and voltage
- C. voltage and period
- D. current and frequency
- Answer:C
- Answer Explanation: