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MCQs

Total Questions : 1058 | Page 10 of 106 pages
Question 91. The value of one bar (in s. i. units) is equal to
  1.     1 × 102 N/m2
  2.     1 × 103 N/m2
  3.     1 × 104 N/m2
  4.     1 × 105 N/m2
 Discuss Question
Answer: Option D. ->  1 × 105 N/m2
Question 92. The property of a working substance which increases or decreases as the heat is supplied or removed in a reversible manner, is known as
  1.     Enthalpy
  2.     Internal energy
  3.     Entropy
  4.     External energy
 Discuss Question
Answer: Option C. ->  Entropy
Question 93. A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called
  1.     Isothermal process
  2.     Hyperbolic process
  3.     Adiabatic process
  4.     Polytropic process
 Discuss Question
Answer: Option B. ->  Hyperbolic process
Question 94. The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is
  1.     Equal to one
  2.     Less than one
  3.     Greater than one
  4.     None of these
 Discuss Question
Answer: Option C. ->  Greater than one
Question 95. The principal constituents of a fuel are
  1.     Carbon and hydrogen
  2.     Oxygen and hydrogen
  3.     Sulphur and oxygen
  4.     Sulphur and hydrogen
 Discuss Question
Answer: Option A. ->  Carbon and hydrogen
Question 96. If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as
  1.     Free expansion
  2.     Hyperbolic expansion
  3.     Adiabatic expansion
  4.     Throttling
 Discuss Question
Answer: Option D. ->  Throttling
Question 97. The unit of pressure in s.i. units is
  1.     kg/cm²
  2.     mm of water column
  3.     Pascal
  4.     Dyne per square cm
 Discuss Question
Answer: Option C. ->  Pascal
Question 98. The general law of expansion or compression is pvn = c, the process is said to be hyperbolic, if n is equal to
  1.     0
  2.     1
  3.     γ
  4.     ∝
 Discuss Question
Answer: Option B. ->  1
Question 99. The unit of length in s.i. units is
  1.     Meter
  2.     Centimeter
  3.     Kilometer
  4.     Millimeter
 Discuss Question
Answer: Option A. ->  Meter
Question 100. Which of the following variables controls the physical properties of a perfect gas?
  1.     Pressure
  2.     Temperature
  3.     Volume
  4.     All of the above
 Discuss Question
Answer: Option D. ->  All of the above

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