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MCQs

Total Questions : 5013 | Page 10 of 502 pages
Question 91. In chemical dehumidification of air
  1.    Both specific humidity & dry bulb temperature increases
  2.    Both specific humidity & dry bulb temperature decreases
  3.    Specific humidity decreases & dry bulb temperature increases
  4.    Specific humidity increases & dry bulb temperature decreases
 Discuss Question
Answer: Option C. -> Specific humidity decreases & dry bulb temperature increases
Question 92. Liquid nitrogen containers can be made from
  1.    Ferritic stainless steel
  2.    HSLA steel
  3.    Titanium
  4.    Austenitic stainless steel
 Discuss Question
Answer: Option B. -> HSLA steel
Question 93. Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
  1.    5
  2.    1.25
  3.    2.5
  4.    3.75
 Discuss Question
Answer: Option A. -> 5
Question 94. According to thermodynamic Farenhite scale, the fundamental interval between ice point to steam point is
  1.    180°
  2.    212°
  3.    32°
  4.    273°
 Discuss Question
Answer: Option A. -> 180°
Question 95. If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity
  1.    Is trebled
  2.    Remains unchanged
  3.    Decreases by a factor of √3
  4.    Decreases by a factor of 1/3
 Discuss Question
Answer: Option B. -> Remains unchanged
Question 96. Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm² . Then the outcoming steam will be
  1.    Wet
  2.    Saturated
  3.    Superheated
  4.    None of these
 Discuss Question
Answer: Option C. -> Superheated
Question 97. The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.
  1.    Silicon
  2.    Carbon
  3.    Phosphorous
  4.    Chromium
 Discuss Question
Answer: Option B. -> Carbon
Question 98. Addition of __________ to steel can not impart it high strength at elevated temperature.
  1.    Nickel
  2.    Magnesium
  3.    Silicon
  4.    Manganese
 Discuss Question
Answer: Option B. -> Magnesium
Question 99. Lead percentage in pure galena is about
  1.    8.6
  2.    86.6
  3.    35.8
  4.    61.4
 Discuss Question
Answer: Option A. -> 8.6
Question 100. When a copper ball is heated, the largest percentage increase will be in its
  1.    Radius
  2.    Area
  3.    Mass
  4.    Volume
 Discuss Question
Answer: Option D. -> Volume

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