Q.1
Which of the following is an extensive property?
  • Volume
  • Pressure
  • Viscosity
  • All of the above
Q.2
Define refrigeration
  • It is the process of continuous cooling or extraction of heat to below that of the atmosphere from a substance with a help of the external work.
  • It is based on the second law of thermodynamics that the heat can made to flow from cold body to a hot body with the help of external source.
  • used to remove heat from the refrigerated space and reject it to atmosphere.
  • All of above
Q.3
The flow through a nozzle is regarded as
  • constant volume flow
  • constant pressure flow
  • isothermal flow
  • isentropic flow
Q.4
The motion of the cam is transferred to the valves through
  • Pistons
  • Rocker Arm
  • Cam shaft Pulley
  • Valve stems
Q.5
How is absolute pressure measured?
  • Gauge pressure + Atmospheric pressure
  • Gauge pressure – Atmospheric pressure
  • Gauge pressure / Atmospheric pressure
  • None of the above
Q.6
Which of the following energy conversion devices convert heat into work?
  • Electrical generators
  • I. C engines
  • Condensers
  • All of the above
Q.7
Steam turbines may be classified according to
  • Direction of steam flow
  • Number of stages
  • Mode of steam action
  • All of these
Q.8
Which of the following cycles uses ‘air’ as the refrigerant
  • Ericson
  • Bell Coleman
  • Stirling
  • Carnot
Q.9
Recuperator as a waste heat recovery system is used mainly in a
  • boiler
  • reheating furnace
  • compressor
  • gas turbine
Q.10
Odometer is an instrument used for measurement of
  • power
  • Fuel consumption
  • Engine speed
  • distance
Q.11
What is full form of SI
  • Simple Ignition
  • Standard idling
  • Spark ignition
  • Solo identification
Q.12
What is the pH value of water permissible for boiler?
  • 0
  • 5.5
  • 6
  • 8.5
Q.13
What is a typical efficiency of a cogeneration system?
  • 58%
  • 85%
  • 68%
  • 95%
Q.14
Which of the following statements is not correct
  • A topping cycle plant generates electricity or mechanical power first
  • A bottoming cycle plant generates heat first
  • Both a and b
  • A bottoming cycle plant generates electricity or mechanical power first
Q.15
Objects with MORE MASS have______________
  • lower potential energy
  • lower number of atoms
  • higher thermal energy
  • higher temperature
Q.16
A waste heat recovery steam generator is used with
  • steam turbines
  • back pressure turbines
  • gas turbines
  • condensing turbines
Q.17
What is the function of air preheater?
  • To increase air temperature by flue gases
  • To increase water temperature by air
  • To increase steam temperature by air
  • To increase air temperature by steam
Q.18
The heat recovery device in which high conductivity bricks are used for storing heat is
  • heat pipe
  • heat pump
  • thermo compressor
  • regenerator
Q.19
Bottoming cycle cogeneration is characterized by
  • Heat first power later
  • Only Heat
  • Power First and Heat Later
  • Only Power
Q.20
The critical pressure gives the velocity of steam at the throat equal to the velocity of sound.
  • Agree
  • Disagree
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