Rajasthan Technical Education Second Year Paper 2016 – Basic Refrigeration

Railway Recruitment Board (RRB) will be conducting RRB Technician CBT Exam from 06th March 2026 to 13th March 2026 in different cities. If you are searching RRB Technician Refrigeration & Air Conditioning Exam Paper then this page is useful to you.

One ton refrigeration is equal to
(a) 100 K Cal/min
(b) 100 K Cal/sec
(c) 50 K Cal/min
(d) 50 K Cal/sec

COP of a reverse Carnot cycle is defiend as
(a) Refrigeration effect/ Heat rejected
(b) Refrigeration effect/ Work done
(c) Work done/ Refrigeration effect
(d) Heat Rejected/ Work done

A value of work done for one ton refrigeration machine having COP 2 is
(a) 1.75 kW
(b) 1 kW
(c) 3 kW
(d) 2.75 kW

The refrigerant used for aeroplane refrigeration is
(a) CO2
(b) Feron-22
(c) Air
(d) Freon-134a

Air refrigeration system works on
(a) Carnot cycle
(b) Rankine cycle
(c) Reverse Brayton cycle
(d) Reverse Erichsen cycle

In a bootstrap aircraft refrigeration system the number of compressors used
(a) one
(b) two
(c) three
(d) Four

Pick up wrong statement
(a) Air refrigeration system is less costly
(b) In air refrigeration system temperature achieved below zero degree Celcius
(c) The COP of air refrigeration system is less
(d) The refrigerant used in air refrigeration system is non-toxic.

The main characteristic of vapour absorption refrigeration system is
(a) Noisy operation
(b) Quiet operation
(c) High COP
(d) Colling below zero degree Celcius

the mositure in a refrigerant is removed by
(a) Condenser
(b) Expansion value
(c) Drier
(d) Flash Chamber

The value of COP for a vapour compression refrigeration cycle is always
(a) less than one
(b) more than one
(c) one
(d) more or less than one

The condition of refrigerant after expansion value in a vapour compression cycle is
(a) Liquid
(b) Vapour
(c) Mixture of liquid and vapour
(d) Dry vapour

Decrease the evaporator’s temperature and pressure, the value of COP will
(a) Increases
(b) Decreases
(c) Remain constant
(d) Decrease or Increase

The highest tempeature in a vapour compression system is at
(a) Expansion value
(b) Compressor”s inlet
(c) Compressor’s discharge
(d) Condenser’s inlet

The constant pressure lines in p-h diagram are
(a) Straight vertical
(b) Straight horizontal
(c) Inside inclined
(d) Outside inclined