Q.1
What does 1 Tonne (TR) in refrigeration mean?
  • a) Weight of gases
  • b) Weight of coolant
  • c) Capacity of 1 tonne air to be cooled to 0 C in 24 hours
  • d) Capacity of 1 tonne water to be cooled to 0 C in 24 hours
Q.2
1 Tonne = ______ KJ/s.
  • a) 2.67
  • b) 1.087
  • c) 3.5
  • d) 232.6
Q.3
Which is the S.I. unit to measure pressure in refrigeration?
  • a) Newton
  • b) Joule
  • c) Pascal
  • d) Bar
Q.4
0 Kelvin = ____ Celsius.
  • a) -273 C
  • b) 273 C
  • c) -273 K
  • d) 0 C
Q.5
The heat removing capacity of one tonne refrigeration is equal to?
  • a) 210 KJ/min
  • b) 620 KJ/min
  • c) 240 KJ/min
  • d) 430 KJ/min
Q.6
What doesCelsius (C) mean on Kelvin scale (K)?
  • a) 350
  • b) 135
  • c) 308
  • d) 298
Q.7
What is S.I. unit of refrigeration?
  • a) J/min
  • b) KJ/s
  • c) KWh
  • d) Kg/s
Q.8
1 N/mm2 = _____ mm of Hg (mercury).
  • a) 1
  • b) 256
  • c) 760
  • d) 720
Q.9
What is the S.I. unit required to measure the work done in refrigeration is?
  • a) Joule/kg
  • b) KJ/kg
  • c) Joule/m. s
  • d) Joule/s
Q.10
What are the pressure in the places at “a” and “b” respectively in the given graph?
  • a) Gauge, Absolute
  • b) Absolute, Gauge
  • c) Atmospheric, Gauge
  • d) Gauge, Atmospheric
0 h : 0 m : 1 s