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SSC JE ELECTRICAL
ssc MCQs with answers - Part 8
1. Determine the capacitive susceptance (in Siemens) of a circuit if the capacitance of the circuit is 0.08 mF and supplied with a 50 Hz frequency ?
0.025
0.034
0.046
0.064
Answer: 0.025
Explanation:
The capacitive susceptance 0.025 (in Siemens) of a circuit if the capacitance of the circuit is 0.08 mF and supplied with a 50 Hz frequency.
2. What will be the transient time (in seconds) of a series RC circuit when the value of the capacitance is 600 microfarad and the value of the resistance is 20 kilo-Ohms ?
10
12
14
16
Answer: 12
Explanation:
12
3. What will be the resonant frequency (in kHz) of a tank circuit when the capacitance and inductance of the circuit is 0.04 mF and 0.04 mH respectively ?
8
6
4
1
Answer: 4
Explanation:
4
4. Multimetres cannot measure the value of ?
voltage
current
resistance
phase angle
Answer: phase angle
Explanation:
Multimetres cannot measure the value of phase angle.
5. Which of the following statement is TRUE ?
A galvanometer can be converted into ammeter by connecting a low value of resistance in series with the galvanometer.
A galvanometer can be converted into ammeter by connecting a low value of resistance in parallel with the galvanometer.
A galvanometer can be converted into ammeter by connecting a high value of resistance in series with the galvanometer.
A galvanometer can be converted into ammeter by connecting a high value of resistance in parallel with the galvanometer.
Answer: A galvanometer can be converted into ammeter by connecting a low value of resistance in parallel with the galvanometer.
Explanation:
A galvanometer can be converted into ammeter by connecting a low value of resistance in parallel with the galvanometer.
6. Which of the statement is TRUE about megger ?
Megger is used for the measurement of voltage.
Megger is used for the measurement of current.
Megger is used for the measurement of insulation resistance.
Megger is used for the measurement of breakdown voltage of insulation.
Answer: Megger is used for the measurement of insulation resistance.
Explanation:
Megger is used for the measurement of insulation resistance.
7. Which of the following bridge is most suitable for the measurement of inductance of a coil ?
Owens Bridge
Schering Bridge
Wiens Bridge
Wheatstone Bridge
Answer: Owens Bridge
Explanation:
Owens Bridge is most suitable for the measurement of inductance of a coil.
8. Determine the required value of series resistance (in Ohms) to convert a galvanometer into a voltmeter of reading 0.4 volt range when the resistance of the galvanometer is 40 ohms and the value of current for full-scale deflection is 4 mA ?
60
50
40
30
Answer: 60
Explanation:
60
9. What will be the sensitivity (in Ohms/volts) of a PMMC type voltmeter when the full-scale reading of the voltmeter is 240 V, the internal resistance of the voltmeter is 200 kilo-Ohms and the series resistance connected to the voltmeter is 80 kilo-Ohms ?
1672.62
1432.23
1224.24
1166.67
Answer: 1166.67
Explanation:
1166.67
10. What will be the value of reactive power (in VAR) of a circuit having power factor of 0.5, when the apparent power of the circuit is 80 A ?
48
69.6
78.3
84
Answer: 69.6
Explanation:
69.6
