Mechanical J.E Quiz-17

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Question 1

Thermal conductivity of non-metal amorphous solids with decrease in temperature _________.

• Aincreases
• Bdecreases
• Cremains constant
• Dmay increase or decrease depending on temperature

Question 2

The engine oil at 150C is cooled to 80C in a parallel flow heat exchanger by water entering at 25C and leaving at 60C. The exchanger effectiveness will be __________.

• A0.36
• B0.46
• C0.56
• D0.66

Question 3

Which of the following key transmits power through frictional resistance only?

• ASaddle key
• BBarth key
• CKennedy key
• DTangent key

Question 4

Which of the following processes would produce strongest components?

• Adie casting
• Bhot rolling
• Cextrusion
• Dforging

Question 5

The cutting tool that performes orthogonal cutting is

• ATwist drill
• BBroach
• Chelical milling cutter
• DSingle point cutting tool for turning

Question 6

The maximum continuous power available from a hydroelectric plant under the most adverse hydraulic conditions is known as __________.

• Abase power
• Bfirm power
• Cprimary power
• Dsecondary power

Question 7

The ratio of actual measured head to head imparted to fluid by impeller for a centrifugal
pump is known as

• Amechanical
• Bvolumetric
• Cmanometric
• Dimpeller

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