NLC Technical Quiz 9

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Question 1

Which one of the following governors is used to drive a gramophone?

• AWatt governor
• BPorter governor
• CPickering governor
• DHartnell governor

Question 2

In a fatigue loading test, the amplitude ratio is denoted by . Let R denote the stress ratio for the condition. The correct relation between  and R is :

• A
• B
• C
• D

Question 3

If one end of a hinged column is made fixed and the other end of the hinged is made free, how much is the critical load compared to the original value?

• Aone-fourth
• Bhalf
• CTwice
• Dfour times

Question 4

An ideal gas at 27⁰C is heated at constant pressure till the volume becomes three times. The temperature of the gas will then be___.

• A81⁰C
• B900⁰C
• C627⁰C
• D927⁰C

Question 5

A composite wall of a furnace has 2 layers of equal thickness have thermal conductivities in the ratio of 3 : 2. What is the ratio of the temperature drop across the two layers?

• A2 : 3
• B3 : 2
• C1 : 2
• D

Question 6

The ratio of the static enthalpy rise in the rotor to the static enthalpy rise in the stage of an axial flow compressor defined as

• APower input factor
• BFlow coefficient
• CTemperature coefficient
• DDegree of reaction

Question 7

The pressure centre is

• AThe centroid of the pressure prism
• BA point on the line of action of the resultant force
• CAt the centroid of the submerged area
• DAlways above the centroid of the area

Question 8

In ECM, the material removal is due to

• Acorrosion
• Berosion
• Cfusion
• Dion displacement

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