Mech Expert

61. What is the primary function of a propeller in an aircraft?

A. To generate lift

B. To generate thrust

C. To control direction

D. To reduce drag

62. Which of the following is a type of manufacturing process?

A. Injection molding

B. Welding

C. Machining

D. All of the above

63. What is the primary purpose of a strain gauge?

A. To measure pressure

B. To measure strain

C. To measure temperature

D. To measure flow

64. Which of the following is a type of renewable energy storage?

A. Battery

B. Capacitor

C. Resistor

D. Diode

65. What is the primary function of a hydraulic system?

A. To transmit power

B. To store energy

C. To reduce friction

D. To cool the system

66. Which of the following is a type of mechanical seal?

A. O-ring

B. Gasket

C. Lip seal

D. All of the above

67. What is the primary purpose of a dynamometer?

A. To measure force

B. To measure speed

C. To measure temperature

D. To measure pressure

68. Which of the following is a type of fluid flow?

A. Laminar

B. Turbulent

C. Transitional

D. All of the above

69. What is the primary function of a crankshaft in an engine?

A. To convert linear motion to rotary motion

B. To regulate fuel flow

C. To control valve timing

D. To reduce emissions

70. Which of the following is a type of composite material reinforcement?

A. Carbon fiber

B. Steel

C. Aluminum

D. Copper

Mechanical Engineering MCQs