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MCQs

Total Questions : 1058 | Page 84 of 106 pages
Question 831. If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to
  1.    Anywhere between zero and infinity
  2.    +ve
  3.    -ve
  4.    Zero
 Discuss Question
Answer: Option D. -> Zero
Question 832. The specific heat of air increases with increase in
  1.    Temperature
  2.    Variation of its constituents
  3.    Pressure
  4.    Both pressure and temperature
 Discuss Question
Answer: Option A. -> Temperature
Question 833. One watt is equal to
  1.    1 Nm/hr
  2.    1 N/m
  3.    1 kNm/hr
  4.    1 Nm/s
 Discuss Question
Answer: Option D. -> 1 Nm/s
Question 834. The gas constant (R) is equal to the
  1.    Product of two specific heats
  2.    Ratio of two specific heats
  3.    Sum of two specific heats
  4.    Difference of two specific heats
 Discuss Question
Answer: Option D. -> Difference of two specific heats
Question 835. The sum of internal energy (U) and the product of pressure and volume (p.v) is known as
  1.    Work done
  2.    Entropy
  3.    Enthalpy
  4.    Power
 Discuss Question
Answer: Option C. -> Enthalpy
Question 836. For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.
  1.    Equal to
  2.    Greater than
  3.    None of these
  4.    Less than
 Discuss Question
Answer: Option D. -> Less than
Question 837. The efficiency of Stirling cycle is __________ Carnot cycle.
  1.    Greater than
  2.    None of these
  3.    Equal to
  4.    Less than
 Discuss Question
Answer: Option C. -> Equal to
Question 838. The efficiency of Ericsson cycle is __________ Carnot cycle.
  1.    None of these
  2.    Equal to
  3.    Greater than
  4.    Less than
 Discuss Question
Answer: Option B. -> Equal to
Question 839. According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.
  1.    None of these
  2.    Third kind
  3.    First kind
  4.    Second kind
 Discuss Question
Answer: Option D. -> Second kind
Question 840. The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle.
  1.    Equal to
  2.    Greater than
  3.    None of these
  4.    Less than
 Discuss Question
Answer: Option B. -> Greater than

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