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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.

All Topics  1919

The process of diffusion of one liquid into the other through a semi-permeable membrane is called_______________________?
A viscosity
B osmosis
C surface tension
D cohesion
Correct Answer: osmosis
The continuity equation is connected with__________________?
A viscous/unviscous fluids
B compressibility of fluids
C conservation of mass
D steady/unsteady flow
Correct Answer: conservation of mass
Newton’s law of viscosity is a relationship between____________________?
A shear stress anctthejiate of angular distortion
B shear stress and viscosity
C shear stress, velocity and viscosity
D pressure, velocity and viscosity
Correct Answer: shear stress anctthejiate of angular distortion
Pressure of the order of 10″‘ torr can be measured by__________________?
A Bourdon tube
B Pirani Gauge
C micro-manometer
D ionisastion gauge
Correct Answer: ionisastion gauge
An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of__________________?
A 1
B 1.2
C 0.8
D 0.75
Correct Answer: 0.75
Mercury is often used in barometer because____________________?
A it is the best liquid
B the height of barometer will be less
C its vapour pressure is so low that it may be neglected
D both B. and C.
Correct Answer: both B. and C.
The speed of sound in a ideal gas varies directly as its__________________?
A pressure
B temperature
C density
D modulus of elasticity
Correct Answer: temperature
Piezometer is used to measure_____________________?
A pressure in pipe, channels etc.
B atmospheric pressure
C very low pressures
D difference of pressure between two points
Correct Answer: very low pressures
Euler’s dimensionless number relates the following__________________?
A inertial force and gravity
B viscous force and inertial force
C viscous force and buoyancy force
D pressure force and inertial force
Correct Answer: pressure force and inertial force
Which of the following manometer has highest sensitivity_________________?
A U-tube with water
B inclined U-tube
C U-tube with mercury
D micro-manometer with water
Correct Answer: micro-manometer with water
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