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MCQs

Total Questions : 206 | Page 6 of 21 pages
Question 51. To produce a spark across the gap of a spark plug, the voltage used is
  1.    1000 to 2000 volts
  2.    2000 to 4000 volts
  3.    4000 to 6000 volts
  4.    6000 to 10000 volts
 Discuss Question
Answer: Option D. -> 6000 to 10000 volts


6000 to 10000 volts


Question 52. The dimensional formula MLT^2 represents
  1.    velocity
  2.    acceleration
  3.    momentum
  4.    force
 Discuss Question
Answer: Option D. -> force


force


Question 53. The compression ratio of a petrol engine is approximately
  1.    3:1
  2.    7:1
  3.    18:1
  4.    25:1
 Discuss Question
Answer: Option B. -> 7:1


7:1


Question 54. The function of a carburettor is to supply
  1.    air and diesel
  2.    air only
  3.    air and petrol
  4.    petrol
 Discuss Question
Answer: Option C. -> air and petrol


air and petrol


Question 55. For cooling the pistons of diesel engine common fluid used is
  1.    air
  2.    water
  3.    fuel oil
  4.    lubricating oil
 Discuss Question
Answer: Option D. -> lubricating oil


lubricating oil


Question 56. The refrigerant used in vapour absorption refrigeration
  1.    Freon-12
  2.    ammonia
  3.    CO2
  4.    Aqua-ammonia
 Discuss Question
Answer: Option D. -> Aqua-ammonia


Aqua-ammonia


Question 57. The part which provides simple harmonic to the D-slide valce of a steam engine is called
  1.    eccentric rod
  2.    valve rod
  3.    piston rod
  4.    fly wheel
 Discuss Question
Answer: Option B. -> valve rod


valve rod


Question 58. Newton is a unit of
  1.    Mass
  2.    Momentum
  3.    Force
  4.    Energy
 Discuss Question
Answer: Option C. -> Force


Force


Question 59. Air fule ratio in a jet engine is
  1.    10:1
  2.    40:1
  3.    60:1
  4.    90:1
 Discuss Question
Answer: Option C. -> 60:1


60:1


Question 60. Which one of the following is spring loaded type
  1.    Watt governor
  2.    Hartnel governor
  3.    Porter governor
  4.    Propel governor
 Discuss Question
Answer: Option B. -> Hartnel governor


Hartnel governor


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