testing-and-maintenance-mcqs - Set (2)

Correct Answer: Orange && Worng Answer: Red

1. The value of load angle for a synchronous motor depends mainly upon its

  • (A). Excitation
  • (B). Load
  • (C). Speed
  • (D). Supply voltage
  • View Answer

    Explanation: Not Avilable

    2. The thickness of the insulation provided to the conductor depends upon

  • (A). Current rating
  • (B). Voltage rating
  • (C). Both (a) and (b)
  • (D). None of these
  • View Answer

    Explanation: Not Avilable

    3. It is fatal to touch a live wire as :

  • (A). The voltage may cause burns to the skin
  • (B). It will cause flow of current through the body
  • (C). The current may cause burns to the skin or inside the body
  • (D). It may cause damage to the heart one nervous system
  • View Answer

    Explanation: Not Avilable

    4. A fuse in a motor circuit provides protection against

  • (A). Short circuit
  • (B). Over load
  • (C). Open circuit
  • (D). Short circuit & overload
  • View Answer

    Explanation: Not Avilable

    5. While you are using a fire extinguisher containing CO2 what happens to the nozzle

  • (A). It becomes currently hot
  • (B). It becomes warm
  • (C). It becomes slightly cold
  • (D). It becomes extermly cold
  • View Answer

    Explanation: Not Avilable

    6. Insulation resistance of a cable is measured by what type of meter

  • (A). Clip on meter
  • (B). Lux meter
  • (C). Megger
  • (D). Earch megger
  • View Answer

    Explanation: Not Avilable

    7. Which of the following is not an important condition for prevention maintenance.

  • (A). Size
  • (B). Age
  • (C). Location
  • (D). Oil used
  • View Answer

    Explanation: Not Avilable

    8. Total productive maintenance aims at

  • (A). Less idle time
  • (B). Increase in productivity
  • (C). Zero down time
  • (D). None of the above
  • View Answer

    Explanation: Not Avilable

    9. The following is not a classification of maintenance :

  • (A). Corrective maintenance
  • (B). Timely maintenance
  • (C). Scheduled maintenance
  • (D). Preventive maintenance
  • View Answer

    Explanation: Not Avilable

    10. Buohholz relay is a

  • (A). Oil actuated relay
  • (B). Current actuated relay
  • (C). Gas actuated relay
  • (D). Oil temperature actuated relay
  • View Answer

    Explanation: Not Avilable

    11. Under voltage relays are mostly used for

  • (A). Transformer protection
  • (B). Bus-bar protection
  • (C). Motor protection
  • (D). Feeder protection
  • View Answer

    Explanation: Not Avilable

    12. What test is performed to verify that the equipment is ready for energizings

  • (A). Maintenance test
  • (B). Type test
  • (C). Commissioning test
  • (D). Reliability test
  • View Answer

    Explanation: Not Avilable

    13. Uneven gap in a induction motor is likely to cause

  • (A). Heating the motor
  • (B). Unbalancing of motor shaft
  • (C). Both (a) and (b)
  • (D). None of these
  • View Answer

    Explanation: Not Avilable

    14. Destable feature for successful parallel operation of two alternators is that both should have :

  • (A). Same reactance
  • (B). Same resistance
  • (C). More of resistance as compared to synchronous reactance
  • (D). Less of resistance as compared to synchronous reactance
  • View Answer

    Explanation: Not Avilable

    15. The open circuit test in a transformer is performed with :

  • (A). Rated transformer voltage
  • (B). Rated transformer cuurrent
  • (C). Ditect current
  • (D). High freqency supply
  • View Answer

    Explanation: Not Avilable

    16. The test which is conducted in all transformer is :

  • (A). Type test
  • (B). Routine test
  • (C). Noise level test
  • (D). Special test
  • View Answer

    Explanation: Not Avilable

    17. An 11KV transformer is subjected to one minute 50Hz test. The test voltage will be :

  • (A). 28KV rms
  • (B). 11KV rms
  • (C). 11KV peak
  • (D). None of these
  • View Answer

    Explanation: Not Avilable

    18. The function of oil in a transformer is

  • (A). To provide insulation and cooling
  • (B). To provide protection against lighting
  • (C). To provide protection against short-circuit
  • (D). To provide lubrication
  • View Answer

    Explanation: Not Avilable

    19. The chemical used in the breather of a transfomer shoulld have the quality of :

  • (A). Absorbing moisture
  • (B). fonizing air
  • (C). Clcansing the transfomer oil
  • (D). None of the above
  • View Answer

    Explanation: Not Avilable

    20. Which of the following test do not indicate that the transformer will work satisfactory for at least thirty years :

  • (A). Temperature rise
  • (B). Dielectric test
  • (C). Load current test
  • (D). Over voltage test
  • View Answer

    Explanation: Not Avilable