SSC JE electrical Mock Test Paper 2019| MES Electrical

SSC previous year solved electrical papers / March 15, 2022

Ques.11. In microwave telemetry, repeater stations are required at every

  1. 2 km
  2. 5 km
  3. 40 km
  4. 100 km

Answer.3. 40 km

 

Ques.12. Which of the following devices are required to measure three-phase power?

  1. One watt meter
  2. One watt meter and one voltage transformer of 1: 1 ratio
  3. One watt meter and two voltmeters
  4. None of the above

Answer.4. None of the above

 

Ques.13. If the excitation of a 3-phase alternator operating on infinite bus bars is changed, which one of the following will also change?

  1. Active power of machine
  2. Reactive power of machine 
  3. The terminal voltage of the machine
  4. Frequency of machine

Answer.2. Reactive power of machine 

 

Ques.14. What is the approximate input impedance of a CRO?

  1. Zero
  2. 1 MΩ
  3. 10 Ω
  4. 10 µΩ

Answer.2. 1 MΩ

 

Ques.15. Which of the following set of IE rules related to additional provisions for use of energy at high and extra high voltage?

  1. IE Rule 61-A
  2. IE Rule 50
  3. IE Rule 64 A
  4. IE Rule 50 A

Answer.3. IE Rule 64 A

 

Ques.16. In which of the following type of digital voltmeter, the input voltage is measured in the form of frequency?

  1. Ramp type
  2. Potentiometric type
  3. Integrating type
  4. None of the above

Answer.3. Integrating type

 

Ques.17. By increasing the transmission voltage to double of its original value the same power can be despatched keeping the line losses

  1. Equal to its original value
  2. Half the original value
  3. Double the original value
  4. One-fourth of the original value

Answer.4. One-fourth of the original value

 

Ques.18. In capacitance grading, three dielectric materials with permittivities ε1, ε2, & ε3 are placed as shown below.

Which of the following condition is true, when all the dielectric materials are subjected to the same maximum stress?

  1. ε1= ε2 = ε3
  2. ε1> ε2 > ε3
  3. ε1< ε2 < ε3
  4. ε1 ε2  ε3 = 1

Answer.3. ε1< ε2 < ε3

 

Ques.19. The role of micro-stepping mode in stepper motor is to

  1. Have rotation to 100% of angular displacement for single stepReattempted
  2. Have 50% of angular displacement for a single step
  3. Have twice the steps under half-stepping mode
  4. Have lower angular displacement similar to a single step in a motor

Answer.4. Have lower angular displacement similar to a single step in a motor

 

Ques.20. The sensitivity of 200 µA meter movement when it is used as a D.C voltmeter is given by

  1. 500 Ω/mV
  2. 5 Ω/V
  3. 0.5 Ω/V
  4. 5Ω/mV

Answer.4. 5Ω/mV

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