Refrigeration And Air Conditioning MCQ Questions & Answers | Mechanical Engineering

A. Condenser tubes

B. Evaporator tubes

C. Refrigerant cooling tubes

D. Capillary tubes

A. Same

B. Lower

C. Higher

D. None of these

A. Colourless

B. Odourless

C. Non-flammable

D. All of these

A. Involves no change in volume

B. Takes place at constant temperature

C. Takes place at constant entropy

D. Takes place at constant pressure

A. Horizontal line

B. Vertical line

C. Inclined line

D. Curved line

A. Small

B. High

C. Equal

D. Anything

A. A refrigerant should have low latent heat

B. If operating temperature of system is low, then refrigerant with low boiling point should be used

C. Pre-cooling and sub-cooling bf refrigerant are same

D. Superheat and sensible heat of a refrigerant are same

A. $$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_2} - {{\text{T}}_1}}}$$

B. $$\frac{{{{\text{T}}_2} - {{\text{T}}_1}}}{{{{\text{T}}_1}}}$$

C. $$\frac{{{{\text{T}}_1} - {{\text{T}}_2}}}{{{{\text{T}}_1}}}$$

D. $$\frac{{{{\text{T}}_2}}}{{{{\text{T}}_2} - {{\text{T}}_1}}}$$

A. Above which liquid will remain liquid

B. Above which liquid becomes gas

C. Above which liquid becomes vapour

D. Above which liquid becomes solid

A. Wet vapour region

B. Superheated vapour region

C. Sub-cooled liquid region

D. None of these