Mechanical Engineering MCQs

2075 MCQs  (Page 160 of 208)

Attempt Mechanical Engineering Mcqs Quiz
The specific weight of water is 1000 kg/m”_________________?
A. At normal pressure of 760 mm
B. At 4°c temperature
C. At mean sea level
D. All the above
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The normal stress in a fluid will be constant in all directions at a point only if__________________________?
A. it is incompressible
B. it has uniform viscosity
C. it has zero viscosity
D. it is frictionless
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When the flow parameters at any given instant remain same at every point, then flow is said to be___________________?
A. Quasi static
B. Steady state
C. Laminar
D. Uniform
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For very great pressures, viscosity of moss gases and liquids__________________?
A. Remains same
B. Increases
C. Decreases
D. Shows erratic behavior
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An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is _________________?
A. 10m/sec2
B. 9.81 m/sec2
C. 10.2/m sec
D. 9.75 m/sec2
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The bulk modulus of elasticity___________________?
A. Has the dimensions of 1/pressure
B. Increases with pressure
C. Is large when fluid is more compressible
D. Is independent of pressure and viscosity
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Viscosity of water in comparison to mercury is_________________?
A. Higher
B. Lower
C. Same
D. Higher/lower depending on temperature
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The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to_________________?
A. 1000
B. 2100
C. 2700
D. 10,000
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Units of surface tension are____________________?
A. Energy/unit area
B. Distance
C. Both of the above
D. It has no units
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The property of fluid by virtue of which it offers resistance to shear is called________________?
A. Surface tension
B. Adhesion
C. Cohesion
D. Viscosity
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Word of the Day
28 Sep
Expatriate
a person who lives outside their native country.
ملک بدری، جلا وطن کرن، شہر بدر کرنا

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