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MCQs

Total Questions : 1342 | Page 129 of 135 pages
Question 1281. The relative humidity lines on a psychrometric chart are
  1.    Vertical and uniformly spaced
  2.    Horizontal and non-uniformly spaced
  3.    Curved lines
  4.    Horizontal and uniformly spaced
 Discuss Question
Answer: Option C. -> Curved lines
Question 1282. Bell Coleman cycle is a
  1.    Reversed Joule cycle
  2.    Reversed Rankine cycle
  3.    Reversed Carnot cycle
  4.    Reversed Otto cycle
 Discuss Question
Answer: Option A. -> Reversed Joule cycle
Question 1283. Where does the lowest temperature occur in a vapour compression cycle?
  1.    Expansion valve
  2.    Compressor
  3.    Evaporator
  4.    Condenser
 Discuss Question
Answer: Option C. -> Evaporator
Question 1284. The dry bulb temperature lines, on the psychrometric chart are
  1.    Curved lines
  2.    Horizontal and non-uniformly spaced
  3.    Vertical and uniformly spaced
  4.    Horizontal and uniformly spaced
 Discuss Question
Answer: Option C. -> Vertical and uniformly spaced
Question 1285. In Electrolux refrigerator
  1.    Ammonia is absorbed in water
  2.    Hydrogen evaporates in ammonia
  3.    Ammonia is absorbed in hydrogen
  4.    Ammonia evaporates in hydrogen
 Discuss Question
Answer: Option D. -> Ammonia evaporates in hydrogen
Question 1286. In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.
  1.    Evaporator
  2.    Compressor
  3.    Condenser
  4.    Expansion valve
 Discuss Question
Answer: Option B. -> Compressor
Question 1287. One ton refrigeration corresponds to
  1.    50 kcal/ hr
  2.    50 kcal/ min
  3.    80 kcal/ hr
  4.    80 kcal/ min
 Discuss Question
Answer: Option B. -> 50 kcal/ min
Question 1288. The refrigerant supplied to a compressor must be
  1.    Dry saturated liquid refrigerant
  2.    None of these
  3.    A mixture of liquid and vapour refrigerant
  4.    Superheated vapour refrigerant
 Discuss Question
Answer: Option D. -> Superheated vapour refrigerant
Question 1289. Ammonia absorption refrigeration cycle requires
  1.    Very little work input
  2.    Zero work input
  3.    Nearly same work input as for vapour compression cycle
  4.    Maximum work input
 Discuss Question
Answer: Option A. -> Very little work input
Question 1290. The leakage in a refrigeration system using Freon is detected by
  1.    Halide torch
  2.    All of these
  3.    Sulphur sticks
  4.    Soap and water
 Discuss Question
Answer: Option A. -> Halide torch

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