Lakshya Education MCQs

Question: During storage, the heating value of coal
Options:
A.Increases
B.Decreases
C.Remain constant
D.May increase or decrease depending upon the method of storage
Answer: Option B

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More Questions on This Topic :

Question 1. The process of maintaining the speed of the turbine constant for various load conditions, is known as
  1.    Bleeding
  2.    Reheating
  3.    Governing
  4.    None of these
Answer: Option C
Question 2. A safety valve usually employed with stationary boilers is
  1.    Lever safety valve
  2.    Dead weight safety valve
  3.    High steam and low water safety valve
  4.    All of these
Answer: Option D
Question 3. The equivalent evaporation is defined as
  1.    The ratio of heat actually used in producing the steam to the heat liberated in the furnace
  2.    The amount of water evaporated or steam produced in kg per kg of fuel burnt
  3.    The amount of water evaporated from and at 100°C into dry and saturated steam
  4.    The evaporation of 15.653 kg of water per hour from and at 100°C
Answer: Option C
Question 4. A single acting steam engine produces __________ power than that of double acting steam engine.
  1.    Equal
  2.    Half
  3.    Double
  4.    Four times
Answer: Option B
Question 5. For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is _________ the piston speed of single acting steam engine.
  1.    Equal to
  2.    Twice
  3.    Three times
  4.    Four times
Answer: Option B
Question 6. Steam turbines are used for
  1.    Large marine propulsion
  2.    Electric power generation
  3.    Direct drive of fans, compressors, pumps
  4.    All of these
Answer: Option D

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