Q.1
What is done to increase the rate of heat transfer in the Velox boiler?
  • The boiler is heated up to very high range of temperature
  • Combustion gases are circulated through tubes with supersonic speed
  • High grade fuel is made use for the combustion
  • The size of the boiler is changed as it is flexible
Q.2
Which of the following relations depict relation between Celsius and Fahrenheit scale?
  • A.(oC / 5) = (oF – 32) / 9
  • b. (oC / 9) = (oF – 32) / 5
  • c. (oC / 32) = (oF – 9) / 5
  • d. None of the above
Q.3
The heat balance sheet for the boiler shows the
  • complete account of heat supplied by 1 kg of dry fuel and the heat consumed
  • moisture present in the fuel
  • steam formed by combustion of hydrogen per kg of fuel
  • complete combustion of one kg of fuel
Q.4
The compression, condensation and expansion of refrigerant in a vapour compression refrigeration system is
  • Isenthalpic, isentropic and isothermal
  • Isentropic, Isochoric and isothermal
  • Isothermal, Isentropic and Isochoric
  • Isentropic, Isobaric and Isenthalpic
Q.5
Which of the following depends on physical properties of fluids as well as geometry of the heat exchanger?
  • Fouling coefficient
  • Overall heat transfer coefficient
  • LMTD (Log Mean Temperature Difference)
  • Effectiveness
Q.6
Heat balance in a boiler furnace is improved by sending air to the furnace
  • At low temperature
  • At high temperature
  • Does not depends on temperature
  • depends on pressure
Q.7
The performance of a boiler is NOT measured by the
  • amount of water evaporated per hour
  • steam produced in kg/h
  • steam produced in kg/kg of fuel burnt
  • complete combustion of one kg of fuel per hour
Q.8
Dribbling a basketball is an example of
  • potential energy
  • stored energy
  • temperature
  • kinetic energy
Q.9
At which pressure the properties of water and steam become identical
  • 1 bar
  • 273 bar
  • 221 bar
  • 100 bar
Q.10
The device used for recovering waste heat from the textile drier exhaust
  • heat wheel
  • recuperator
  • economizer
  • regenerator
Q.11
Which will have the HIGHEST thermal energy?
  • Hot cup of tea
  • Cold bathtub water
  • Huge lake
  • Warm bowl of soup
Q.12
Objects with MORE MASS have MORE thermal energy because
  • there are more molecules with energy in bonds
  • there are less atoms
  • there is less kinetic energy in the system
  • there is no potential energy at all
Q.13
Which will have the LOWEST thermal energy?
  • Large mug of hot coffee
  • Baby bottle with warm milk
  • Gatorade jug of cold Gatorade
  • Large frozen puddle
Q.14
Everything has thermal energy
  • False
  • True
Q.15
All matter is made up of atoms that are constantly moving
  • True
  • False
Q.16
Which of the following is the correct definition of ‘Shaft Power’?
  • It is the power developed by the blades
  • It is the power developed at the rim
  • It is the power based on the total internal steam flow and adiabatic heat drop
  • It is the actual power transmitted by the turbine
Q.17
Which of the following is the correct definition for ‘Adiabatic Power’?
  • It is the power developed at the rim
  • It is the actual power transmitted by the turbine
  • It is the power based on the total internal steam flow and adiabatic heat drop
  • It is the power developed by the blades
Q.18
In the context of cogeneration turbine, the thermodynamic process taking place is
  • expansion
  • condensation
  • contraction
  • both (a) & (c)
Q.19
For objects that have the SAME mass, which object will have a HIGHER thermal energy?
  • the object with the higher temperature
  • the object with the lower temperature
  • the objects will have the same temperature
  • the objects have no temperature
Q.20
Temperature always measures the ___________ movement of molecules
  • median
  • mode
  • total
  • average
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