Top 50+ Solved Principles of Evaporators, Condensers, Compressor and Expansion Devices MCQ Questions Answer
From 1 to 10 of 10
Q. Heat is absorbed by a refrigerant, during a refrigeration cycle in a
a. condenser
b. evaporator
c. compressor
d. throttle valve
Q. What is the effect of frost on the cooling coils of the evaporator of refrigeration system
a. It reduces the life of cooling coils
b. It increases the compressor pressure
c. It makes the compressor run for comparatively short runs
d. It acts as the insulator and decreases the heat transfer rate
Q. The widely used refrigerant in domestic refrigerators is
a. Carbon-dioxide
b. Sulphur dioxide
c. Freon-12
d. Ammonia
Q. Freon group refrigerants are
a. toxic
b. inflamma
c. nontoxic and inflammable
d. non- toxic & non-inflammable
Q. Latent heat of vaporization of a refrigerant ,at lower temperatures and pressures
a. increase
b. decreases
c. remains constant
d. unpredictable
Q. The refrigerant with highest critical pressure is
a. Carbon dioxide
b. Ammonia
c. Freon-11
d. Freon-22
Q. The Refrigerant commonly used in commercial ice plants is
a. Carbon-dioxide
b. Air
c. Ammonia
d. Freon-12
Q. Which of the following refrigerants has the lowest boiling point?
a. Freon-12
b. Carbon-dioxide
c. Ammonia
d. Sulphur dioxide
Q. In a flooded type of Evaporator which of the following types of expansion device is utilized
a. Float Valve
b. Thermostatic device
c. Capillary tube
d. Self actuated expansion valve
Q. Which of the following statements are TRUE?
a. A capillary tube is a variable opening area type expansion device
b. In a capillary tube pressure drop takes place due to fluid friction
c. In a capillary tube pressure drop takes place due to fluid acceleration
d. In a capillary tube pressure drop takes place due to fluid friction and acceleration
- 1 (current)