Mechanical Engineering MCQs

81. What is the primary function of a governor in a steam engine?
A. To regulate speed
B. To increase power
C. To reduce friction
D. To control temperature
82. Which of the following is a type of material failure?
A. Brittle fracture
B. Ductile fracture
C. Fatigue failure
D. All of the above
83. What is the primary purpose of a control valve?
A. To regulate flow
B. To increase pressure
C. To reduce temperature
D. To store fluid
84. Which of the following is a type of renewable energy source?
A. Biomass
B. Coal
C. Natural Gas
D. Nuclear
85. What is the primary function of a radiator fan in a vehicle?
A. To cool the radiator
B. To heat the cabin
C. To increase power
D. To reduce noise
86. Which of the following is a type of mechanical linkage?
A. Slider-crank
B. Four-bar
C. Cam-follower
D. All of the above
87. What is the primary purpose of a belt drive?
A. To transmit power
B. To store energy
C. To reduce friction
D. To control speed
88. Which of the following is a type of mechanical fastener?
A. Bolt
B. Screw
C. Nut
D. All of the above
89. What is the primary function of a throttle valve in an engine?
A. To control air intake
B. To ignite the fuel
C. To cool the engine
D. To reduce emissions
90. Which of the following is a type of mechanical efficiency?
A. Thermal efficiency
B. Volumetric efficiency
C. Mechanical efficiency
D. All of the above