Thermodynamics

111. The specific heat of air increases with increase in

  1. temperature
  2. pressure
  3. both pressure and temperature
  4. variation of its constituents
  5. air flow

Correct answer: (A)
temperature

112. The statement that molecular weights of all gases occupy the same volume is known as

  1. Avogadro's hypothesis
  2. Dalton's law
  3. Gas law
  4. Law of thermodynamics
  5. Joule's law.

Correct answer: (A)
Avogadro's hypothesis

113. The term N.T.P. stands for

  1. nominal temperature and pressure
  2. natural temperature and pressure
  3. normal temperature and pressure
  4. normal thermodynamic practice
  5. normal thermodynamic pressure.

Correct answer: (C)
normal temperature and pressure

114. The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that

  1. carnot cycle can't work with saturated steam
  2. heat is supplied to water at temperature below the maximum temperature of the cycle
  3. a rankine cycle receives heat at two places
  4. rankine cycle is hypothetical
  5. none of the above.

Correct answer: (B)
heat is supplied to water at temperature below the maximum temperature of the cycle

115. The unit of energy in S.I. units is

  1. watt
  2. joule
  3. joule/s
  4. joule/m
  5. joule m.

Correct answer: (B)
joule

116. The unit of length in S.I. units is

  1. meter
  2. centimeter
  3. kilometer
  4. millimeter.
  5. none

Correct answer: (A)
meter

117. The unit of mass in S.I. units is

  1. kilogram
  2. gram
  3. tonne
  4. quintal
  5. newton.

Correct answer: (A)
kilogram

118. The unit of power in S.I. units is

  1. newton
  2. pascal
  3. erg
  4. watt
  5. joule.

Correct answer: (D)
watt

119. The unit of pressure in S.I. units is

  1. kg/cm2
  2. mm of water column
  3. pascal
  4. dynes per square cm
  5. bars

Correct answer: (C)
pascal

120. The unit of temperature in S.I. units is

  1. Centigrade
  2. Celsius
  3. Fahrenheit
  4. Kelvin
  5. Rankine.

Correct answer: (D)
Kelvin

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