officerpath@gmail.com Hyderabad, Pakistan
Login Register
Latest Jobs CSS 2025 PMS CCE Sindh FPSC PPSC MCQs Past Papers Current Affairs Scholarships Admissions Downloads Roll No. Slips Results
Electrical Engineering

Switchgear Protections MCQs

Practice Switchgear Protections MCQs for competitive exams.

Switchgear Protections MCQs

Practice questions from this topic.

The fuse rating is expressed in terms of

  1. A. current
  2. B. voltage
  3. C. VAR
  4. D. kVA
Report Error

The fuse wire, in D.C. circuits, is inserted in

  1. A. negative circuit only
  2. B. positive circuit only
  3. C. both (A) and (B) D. either (A) or (B)
Report Error

A short-circuit is identified by

  1. A. no current flow
  2. B. heavy current flow
  3. C. voltage drop
  4. D. voltage rise
Report Error

In Railway applications ______ circuit breaker is used.

  1. A. SFe
  2. B. bulk oil
  3. C. minimum oil
  4. D. air break
Report Error

Interruption of large currents by relay requires

  1. A. arc suppressing blow out coils
  2. B. wide separation of the opened contacts
  3. C. high speed opening of contacts
  4. D. all of the above
Report Error

A.C. network analyzer is used to solve problems of

  1. A. Load flow
  2. B. Load flow and short-circuit
  3. C. Load flow and stability
  4. D. Load flow, short-circuit and stability
Report Error

The information to the circuit breaker under fault conditions is provided by

  1. A. relay
  2. B. rewirable fuse
  3. C. H.R.'only
  4. D. all of the above
Report Error

The main function of a fuse is to

  1. A. protect the line
  2. B. open the circuit
  3. C. protect the appliance
  4. D. prevent excessive currents E. none of the above
Report Error

For the protection of power station buildings against direct strokes the requirements are

  1. A. interception
  2. B. interception and conduction
  3. C. interception, conduction and dissipation
  4. D. interception, conduction, dissipation and reflection E. none of the above
Report Error

________ relay is preferred for phase fault on short transmission line.

  1. A. Induction type
  2. B. Reactance
  3. C. Impedance
  4. D. None of the above
Report Error

D.C. shunt relays are made of

  1. A. few turns of thin wire
  2. B. few turns of thick wire
  3. C. many turns of thin wire
  4. D. many turns of thick wire
Report Error

H.R.C. fuses provide best protection against

  1. A. overload
  2. B. reverse current
  3. C. open-circuits
  4. D. short-circuits
Report Error