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MCQs

Total Questions : 206 | Page 4 of 21 pages
Question 31. Permeability, in relation to moulding sands, is high for
  1.    coarse grains
  2.    fine grains
  3.    round grains
  4.    medium grains
 Discuss Question
Answer: Option A. -> coarse grains


coarse grains


Question 32. For machining the flange of a 90 elbow on a lathe, the following holding device is used.
  1.    Lathe dog
  2.    Catch plate
  3.    Angle plate
  4.    Face plate
 Discuss Question
Answer: Option D. -> Face plate


Face plate


Question 33. A sine bar cannot be used without
  1.    Angle gauge
  2.    Vernier calliper
  3.    Slip gauge
  4.    Micrometer
 Discuss Question
Answer: Option A. -> Angle gauge


Angle gauge


Question 34. The purpose of tumbler gears in lathe is to
  1.    Cut gears
  2.    Cut threads
  3.    Reduce spindle speeds
  4.    Give desired direction of movement to the lathe carriage
 Discuss Question
Answer: Option D. -> Give desired direction of movement to the lathe carriage


Give desired direction of movement to the lathe carriage


Question 35. Which one of the following is not part of combination set?
  1.    Try square
  2.    Scale
  3.    Bevel Protractor
  4.    Dial guage
 Discuss Question
Answer: Option B. -> Scale


Scale


Question 36. In a mechanical refrigeration system, the highest temperature of refrigerant occurs
  1.    Between condenser and evaporater
  2.    In evaporator
  3.    Before expansion value
  4.    Between compressor and condenser
 Discuss Question
Answer: Option D. -> Between compressor and condenser


Between compressor and condenser


Question 37. In vapour compression refrigeration system, compressor is used because
  1.    It increases cooling effect of cycle
  2.    It makes possible, to remove heat from refrigerant at atmospheric pressure
  3.    It increases the coefficient of performance of the system
  4.    It removes thermal properties of refrigerant
 Discuss Question
Answer: Option D. -> It removes thermal properties of refrigerant


It removes thermal properties of refrigerant


Question 38. For gas turbines, the compressors used are
  1.    Reciprocating type
  2.    Centrifugal type
  3.    Axial flow type
  4.    Sliding value type
 Discuss Question
Answer: Option A. -> Reciprocating type


Reciprocating type


Question 39. At half load the steam, consumption in the throttle governed engine is 'S1' and in a cut off governed engine it is 'S2' under similar condition
  1.    S2>S1
  2.    S2=S1
  3.    S2=S1/4
  4.    S2
 Discuss Question
Answer: Option A. -> S2>S1


S2>S1


Question 40. In V-belts the contact between the pulley and the belt is at the
  1.    Bottom only
  2.    Both side and bottom
  3.    Top and bottom
  4.    Sides only
 Discuss Question
Answer: Option A. -> Bottom only


Bottom only


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