Power systems - Generation - Electrical Engineering (MCQ) questions and answers
Dear Readers, Welcome to Power systems - Generation multiple choice questions and answers with explanation. These objective type Power systems - Generation questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma.
Specially developed for the Electrical Engineering freshers and professionals, these model questions are asked in the online technical test and interview of many companies.
These tutorial are also important for your viva in university exams like Anna university, Pune, VTU, UPTU, CUSAT etc.
1) What is the main disadvantage of phase advancers?
- Published on 21 Nov 15
a. Cannot be used for motors below 200 H.P
b. Produces noise
c. Can be used where synchronous motor is un admissible
d. None of these
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2) Phase advancers are used for which among the following machines?
- Published on 21 Nov 15
a. Transformers
b. Synchronous machines
c. Induction motors
d. DC machines
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3) Which among these is the advantage of synchronous condensers?
- Published on 21 Nov 15
a. Helps in achieving the stepless control of power factor.
b. The motor windings have a lower thermal stability.
c. The maintenance cost is low.
d. All of the above.
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Answer
Explanation
Related Ques
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ANSWER: Helps in achieving the stepless control of power factor.
Explanation:
No explanation is available for this question!
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4) What is the advantage of the static capacitors?
- Published on 21 Nov 15
a. Low losses
b. Easy installation
c. Lower maintenance
d. All of the above
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5) Power factor can be improved by connecting which among these?
- Published on 21 Nov 15
a. Static capacitors.
b. Resistors.
c. Synchronous condensers.
d. Both (a) and (c).
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6) For which among the following consumers is penalty imposed for low power factor?
- Published on 21 Nov 15
a. Residential and commercial consumers.
b. Industrial consumers.
c. Agricultural consumers.
d. All of the above.
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7) The primary reason for the low power factor is due to the installation of
- Published on 21 Nov 15
a. Induction motors
b. DC motors
c. Synchronous motors
d. Commutator motors
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8) For a consumer what is the most economical power factor?
- Published on 21 Nov 15
a. 0.25 – 0.5 lagging
b. 0.25 – 0.5 leading
c. 0.85 – 0.95 lagging
d. 0.85 – 0.95 leading
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9) Lower power factor is usually not due to ____________.
- Published on 21 Nov 15
a. Discharge lamp
b. Arc lamps
c. Incandescent lamps
d. Induction furnace
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10) Which among the following happens in a low power factor?
- Published on 21 Nov 15
a. Large kVA rating of the equipment.
b. Greater conductor size.
c. Reduced handling capacity of the system.
d. All of the above.
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