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MCQs

Total Questions : 377 | Page 34 of 38 pages
Question 331. In case of a flat compounded generator:
  1.    voltage generated is less than the rated voltage
  2.    generated voltage is proportional to the load on the generator
  3.    voltage remains constant irrespective of the load
  4.    speed varies in proportion to the load on the generator
 Discuss Question
Answer: Option C. -> voltage remains constant irrespective of the load
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 332. Interpole flux should be sufficient to_____________?
  1.    neutralise the commutating self induced e.m.f.
  2.    neutralise the armature reaction flux
  3.    neutralise both the armature reaction flux as well as commutating e.m.f. induced in the coil
  4.    perform none of the above functions
 Discuss Question
Answer: Option C. -> neutralise both the armature reaction flux as well as commutating e.m.f. induced in the coil
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 333. Which of the following generator will have negligible terminal voltage while running on no-load?
  1.    Series generator
  2.    Shunt generator
  3.    Compound generator
  4.    Separately excited generator
 Discuss Question
Answer: Option A. -> Series generator
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 334. Which of the following D.C. generators will be in a position to build up without any residual magnetism in the poles?
  1.    Series generator
  2.    Shunt generator
  3.    Compound generator
  4.    None of the above
 Discuss Question
Answer: Option D. -> None of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 335. Permeance is the reciprocal of______________?
  1.    flux density
  2.    reluctance
  3.    ampere-turns
  4.    resistance
 Discuss Question
Answer: Option B. -> reluctance
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 336. In over compounded generator, full load terminal voltage is______________?
  1.    almost zero
  2.    less than no load terminal voltage
  3.    more than no load terminal voltage
  4.    equal to no-load terminal voltage
 Discuss Question
Answer: Option C. -> more than no load terminal voltage
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 337. In D.C. generators the polarity of the interpoles_____________?
  1.    is the same as that of the main pole ahead
  2.    is the same as that of the immediately preceding pole
  3.    is opposite to that of the main pole ahead
  4.    is neutral as these poles do not play part in generating e.m.f.
 Discuss Question
Answer: Option A. -> is the same as that of the main pole ahead
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 338. In a level compounded D.C. generator, full load terminal voltage is______________?
  1.    negligibly low
  2.    equal to no-load terminal voltage
  3.    more than no-load terminal voltage
  4.    less than no-load terminal voltage
 Discuss Question
Answer: Option B. -> equal to no-load terminal voltage
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 339. The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons except:_____________?
  1.    armature reaction
  2.    armature resistance drop
  3.    field weakening due to armature reaction and armature
  4.    commutation
 Discuss Question
Answer: Option D. -> commutation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 340. The e.m.f. generated in a D.C. generator is directly proportional to____________?
  1.    flux/pole
  2.    speed of armature
  3.    number of poles
  4.    all of the above
 Discuss Question
Answer: Option B. -> speed of armature
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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