M C Q s D r i v e

Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

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Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

The time oscillation of a floating body with increase in metacentric height will be_________________?
A same
B higher
C lower
D lower/higher depending on weight of body
Correct Answer: lower
Differential monometer is used to measure___________________?
A pressure in pipes, channels etc.
B atmospheric pressure
C very low pressure
D difference of pressure between two points
Correct Answer: difference of pressure between two points
Resultant pressure of the liquid in the case of an immersed body acts through____________________?
A centre of gravity
B centre of pressure
C metacentre
D centre of buoyancy
Correct Answer: centre of pressure
An open vessel of water is accelerated up an inclined plane. The free water surface will__________________?
A be horizontal
B make an angle in direction of inclination of inclined plane
C make an angle in opposite direction to inclination of inclined plane
D any one of above is possible
Correct Answer: make an angle in opposite direction to inclination of inclined plane
For a floating body to be in equilibrium_____________________?
A meta centre should be above e.g.
B centre of buoyancy and e.g. must lie on same vertical plane
C a righting couple should be formed
D all of the above
Correct Answer: all of the above
Ratio of inertia force to elastic force is known as__________________?
A Mach number
B Froude number
C Reynold’s number
D Weber’s number
Correct Answer: Mach number
Ratio of inertia force to surface Jension is known as ___________________?
A Mach number
B Froude number
C Reynold’s number
D Weber’s number
Correct Answer: Weber’s number
When a body floating in a liquid, is displaced slightly, it oscillates about _________________?
A e.g. of body
B center of pressure
C center of buoyancy
D metacentre
Correct Answer: metacentre
If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be_________________?
A 2 meters of water column
B 3 meters of water column
C 5 meters of water column
D 6 meters of water Column
Correct Answer: 6 meters of water Column
A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is____________________?
A 9,000 kg
B 13,500 kg
C 18,000 kg
D 27,000 kg
Correct Answer: 13,500 kg