Mechanical Engineering MCQs

2075 MCQs  (Page 164 of 208)

Attempt Mechanical Engineering Mcqs Quiz
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is____________________?
A. 2.4 m
B. 3.0 m
C. 4.0 m
D. ”2.5 m
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The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if___________________?
A. The area is horizontal
B. The area is vertical
C. The area is inclined
D. All of the above
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According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to_________________?
A. The weight of the body
B. More than the weight of the body
C. Less than the weight of the body
D. Weight of the fluid displaced by the body
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For a body floating in a liquid the normal pressure exerted by the liquid acts at ____________________?
A. Bottom surface of the body
B. E.g. of the body
C. Metacentre
D. All points on the surface of the body
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A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?
A. 10 m/sec
B. 25 m/sec
C. 2 m/sec
D. 50 m/sec
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A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?
A. 1 : 5
B. 1 : 2.5
C. 1 :25
D. 1:v5″
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For a floating body to be in stable equilibrium, its metacentre should be___________________?
A. below the center of gravity
B. below the center of buoyancy
C. above the center of buoyancy
D. between e.g. and center of pressure
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Center of pressure on an inclined plane is___________________?
A. At the centroid
B. Above the centroid
C. Below the centroid
D. At metacentre
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The two important forces for a floating body are__________________?
A. Buoyancy, gravity
B. Buoyancy, pressure
C. Buoyancy, inertial
D. Inertial, gravity
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The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be __________________?
A. 2 metres of water column
B. 3 metres of water column
C. 3.5 metres of water column
D. 4 m of water column
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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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