1 tone of refrigeration is equal to :

500 kJ of heat is removed from a cooled space in a reverse Carnot cycle refrigerator, by an evaporator by refrigerant at -23⁰C. The change in entropy of the refrigerant 

Identify the incorrect statement, from the following options:

An air refrigeration cycle ________.

The effect of reducing the evaporator pressure on a simple vapour compression refrigeration cycle is:

Efficiency of a Carnot engine is 75%. If the cycle direction is reversed, COP of the reversed Carnot cycle is

A Carnot heat pump is working with an efficiency of 50%. If the cycle is converted into a heat pump after reversing, then what is the coefficient of performance of 

If the efficiency of a Carnot engine is 40% then the COP of the Carnot refrigerator will be ________ .

If the ratio of the lower to the higher absolute temperature is 7/8 , then what will  be the  COP of  the Carnot  refrigerator?

While working as a heat engine, the efficiency is 40%. If the cycle is reversed and made into heat pump. What is the coefficient of performance of the heat pump?

A refrigeration plant operates in reverse Carnot engine. The temperature is maintained at -10⁰c and the heat is transferred at the rate of 10 kW. The heat is transferred from the cycle to atmosphere at a temperature of 25⁰c, What is the power (in kW) required to drive the plant?

Water, by evaporative cooling, can theoretically be cooled down to

A Carnot heat pump is used to maintain a room at a temperature of T⁰ C, the initial temperature of the room was -10⁰C. If the power requirement of the pump is 20 kW and the heat provided to the room is 150 kW.  What will be the value of T?

Which of the following equation is true for work required by heat pump?

What happens of the COP of a heat pump, when the temperature difference between source and sink in increased?

Water by evaporative cooling can theoretically be cooled down to

If a Carnot refrigerator has a COP of 6. What is the ratio of the lower to the higher absolute temperature?

Tonnes of refrigeration mean________ .

A Carnot heat pump is used to maintain a room at a temperature of -7⁰C  , the initial  temperature of the room was 30⁰C , If the power  requirement of the pump is 20 kW, What is the heat pumped (in kW) to the room?

What happens of the COP of a heat pump, when the temperature difference between source and sink is decreased?

A refrigeration system works on

Efficiency of a Carnot engine is 75%. If the cycle direction is reversed, COP of the reversed Carnot cycle is

For a heat pump, the second law of efficiency can be written in the from_______.

Heat pump is a device which

A Carnot heat pump works between temperature limits of 277⁰c and 27⁰c . Its COP is

If the COP of Carnot refrigerator is 4, then the thermal efficiency of the Carnot engine would be ________ .

The door of a running refrigerator inside a room was left open. Which of the following statement is correct?

In humidification process ________ .

Dew point temperature is always an indication of ________ .

In cooling tower, water is cooled by the process of ________ .

Water, by evaporative cooling, can theoretically be cooled down to ________ .

Filling or decking in a cooling tower increases the rate of heat transfer by providing

The saturation temperature of steam with increase in pressure increases ________ .

A hermetically sealed unit implies ________ .

Which of the following refrigerating plants requires no electricity?

Cryogenics refers to

Relative humidity is:

Dew point is ________ .

Spray humidifying is the process of adding moisture to the air by passing it through

स्प्रे ह्यूमिडिफ़ाइंग हवा को पारित करके उसमें नमी जोड़ने की प्रक्रिया है

A. Chiller

B. Air Conditioning Plant

C. Washers

Dehumidification is the process of removing moisture from air with dry bulb temperature ________ .

The weight of the water vapour in kg contained in 1m³ of air vapour mixture at its total pressure is known as ________ .

The difference between dry bulb and wet bulb temperature increases as ________.

In a vapour compression refrigeration system, liquid to suction heat exchanger is used to ________ .

If a mass of moist air in an airtight vessel is heated to a higher temperature, then ________ . 

For air with a relative humidity of 80% ________. 

80% ________ की सापेक्ष आर्द्रता वाली हवा के लिए।

Condensing temperature in a refrigerator is the temperature ________ .

In actual refrigeration systems, the compressor handles vapour only. What is this process commonly referred to as ________ .

Air is normally dehumidified by ________ .

In vapour absorption refrigeration systems, which of the following fluids are commonly   used?

If air is heated without changing its moisture content, the dew point will ________ .

On psychrometric chart, wet bulb temperature lines are ________ .