Mechanical J.E Quiz-56

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Question 1

The work done by a body in moving down a smooth inclined plane in comparison to being dropped vertically downwards from same height will be

• Amore
• Bless
• Cequal
• Dzero in both cases

Question 2

Maximum impulse will be developed in hydraulic ram when _______.

• Awhen valve closes suddenly
• Bsupply pipe is long
• Csupply pipe is short
• Dram chamber is large

Question 3

Which of the following would lead to a reduction in thermal resistance?

• AIn conduction, reduction in the thickness of the material and an increase in the thermal conductivity.
• BIn convection, stirring of the fluid and cleaning the heating surface
• CIn radiation, increasing the temperature and reducing the emissivity
• DAll options are correct

Question 4

The crest diameter of a screw thread is same as _________.

• Amajor diameter
• Bminor diameter
• Cpitch diameter
• Dcore diameter

Question 5

The key shown in the figure below is:

• ALewis key
• BKennedy key
• CPin key
• DBarth key

Question 6

For a thin spherical shell subjected to internal pressure, the ratio of volumetric strain to diametrical strain is ___________.

• A5 : 4
• B3 : 2
• C2 : 1
• D3 : 1

Question 7

Which of the following laws is applicable for the behaviour of a perfect gas?

• ABoyle’s law
• BCharle’s law
• CGay-Lussac law
• DAll options are correct

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