Mechanical Engineering MCQs

71. What is the primary purpose of a pressure regulator?
A. To control pressure
B. To control flow
C. To control temperature
D. To control speed
72. Which of the following is a type of mechanical vibration?
A. Free vibration
B. Forced vibration
C. Damped vibration
D. All of the above
73. What is the primary function of a fuel injector in an engine?
A. To deliver fuel to the combustion chamber
B. To ignite the fuel
C. To cool the engine
D. To reduce emissions
74. Which of the following is a type of mechanical testing?
A. Tensile testing
B. Compression testing
C. Fatigue testing
D. All of the above
75. What is the primary purpose of a flywheel energy storage system?
A. To store rotational energy
B. To generate electricity
C. To reduce friction
D. To control speed
76. Which of the following is a type of renewable energy technology?
A. Solar photovoltaic
B. Wind turbine
C. Hydroelectric
D. All of the above
77. What is the primary function of a timing belt in an engine?
A. To synchronize crankshaft and camshaft
B. To increase power
C. To reduce noise
D. To cool the engine
78. Which of the following is a type of mechanical energy?
A. Kinetic energy
B. Potential energy
C. Rotational energy
D. All of the above
79. What is the primary purpose of a heat sink?
A. To dissipate heat
B. To generate heat
C. To store heat
D. To insulate heat
80. Which of the following is a type of mechanical wave?
A. Transverse wave
B. Longitudinal wave
C. Surface wave
D. All of the above