AP ECET MECHANICAL ENGINEERING Multiple Choice Questions (MCQs)
AP ECET Mechanical Engineering - Unit VII MCQs
91. What is the property of steam that defines its ability to do work?
Answer: c) Enthalpy
92. Which of the following is NOT a common type of boiler?
Answer: c) Shell-and-tube heat exchanger
93. What is the primary function of a steam nozzle?
Answer: c) To increase the velocity of steam
94. The condition for maximum discharge in a steam nozzle occurs when:
Answer: b) Steam velocity is maximum
95. Which of the following is a characteristic of an impulse steam turbine?
Answer: b) The steam expands through fixed nozzles only
96. What type of steam turbine is classified based on the expansion of steam?
Answer: d) Both impulse and reaction turbines
97. In a single-stage impulse turbine, the steam expands in:
Answer: b) Fixed blades
98. Which of the following velocity diagrams represents a reaction turbine?
Answer: c) Inlet velocity < Exit velocity
99. The function of a steam condenser is to:
Answer: a) Convert steam into water
100. In a steam condenser, the heat is rejected by:
Answer: b) Water cooling
101. The performance of a boiler can be measured in terms of:
Answer: a) Efficiency
102. The main disadvantage of fire-tube boilers compared to water-tube boilers is:
Answer: c) Limited steam generation capacity
103. Which of the following factors affects the performance of a steam turbine?
Answer: d) All of the above
104. In a steam nozzle, the mass flow rate is directly proportional to:
Answer: a) The area of the nozzle
105. The efficiency of a reaction steam turbine depends on:
Answer: b) The condition of steam at entry and exit
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