📝 [PIPE] QB ID: 1508131424010823 | Essential & Supplementary Elements | Set 07

High superheat of the vapor in the system would cause _____.

The solenoid valve is actuated by which of the following?

Which of the following stops the compressor before the relief valve opens?

What is the effect if the thermal bulb is loose on the evaporator coils?

If the superheat on the suction side of the compressor is increased, what will happen to the tonnage capacity of the unit?

What do you usually do you correct slugging and flooding back?

In a Freon-11 system there is no:

The suction pressure control valve is actuated by which of the following?

Which of the following would cause the crankcase and head to get hot with low suction pressure?

Which of the following is the function of a suction pressure regulating valve?

Which of the following is the cause if the outlet of a thermostatic valve is warmer than the inlet side?

How is a thermostatic valve tested?

Which of the following will cause an automatically controlled F-12 compressor to start?

Where is the solenoid coil installed?

The “refrigerating effect” of a refrigerant is:

The “refrigerating effect” of a refrigerant is always:

What will happen if the expansion valve is opened too wide?

Which of the following should not be used to clean scale traps?

If one of the ship’s service boxes suddenly stops cooling, the most likely cause would be the malfunction of the:

Which of the following items is not important when using a halide torch?

A system should be purged when the liquid outlet temperature from the condenser is more than the temperature corresponding to the discharge pressure:

Which of the following would cause the compressor to run continuously?

In a vapor compression cycle the lowest temperature is found in _____.

The moisture in a refrigeration system can be removed with the help of which of the following?

Which of the following refrigerants has lowest freezing point temperature?

During compression in a vapor compression cycle when the refrigerant is super-heated, what happens to the performance?

A Bell-Colman Cycle is also known as _____.

Critical temperature is that temperature above which:

Rating of a domestic refrigerator is of the order of:

What is the usual COP of a domestic refrigerator?

Horsepower per ton of refrigeration is expressed as:

The highest temperature in vapor compression cycle is produced during:

Which type of compressor is used in refrigeration system?

What is the reason why a thermometer in vapor compression system is installed close to the compressor?

Which refrigerant has the highest critical point temperature?

White ice is:

Clear ice:

Dry ice is:

The leaks in a refrigerating system using Freon can be detected by:

340 . The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents:

Which of the following uses a secondary refrigerant?

Which of the following secondary refrigerants generally used in milk chilling plants?

What is the cycle where a refrigeration generally operates?

Which of the following is also known as Refrigerant No. R-717?

In which part of the vapor compression cycle there is abrupt change in pressure and temperature:

What do you call a plate or vane used to direct or control movement of fluid or air within the confined are?

Brazing is used for joining two _____.

Which refrigerant is used for the air- conditioning of passenger aircraft cabin?

Oil separator in a refrigeration cycle is installed between the _____.

A flash chamber is installed in the refrigeration circuit so as to: