AAI Technical Rapid Quiz-21

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Question 1

The maximum frictional force which comes into play when a body just begins to slide over the surface of another body is known as ___________.

• Asliding friction
• Brolling friction
• Climiting friction
• DNone of these

Question 2

In the figure given below, curve A will be applicable when thermal conductivity of the material.

• Aincreases with increase in temperature
• Bdecreases with increase in temperature
• Cis very large
• Dis constant at all the temperatures

Question 3

The size of the gear is usually specified by :

• APitch circle diameter
• BPressure angle
• CCircular pitch
• DDiameter pitch

Question 4

First product of the blast furnace in the process of converting iron ore into useful metal by reduction is called ___________.

• ACast iron
• BWrought iron
• CPig iron
• DSteel

Question 5

Which one of the following is a gravity controlled type governor?

• AHartnell governor
• BHartung governor
• CWatt governor
• DPickering governor

Question 6

Dehumidification is the process of removing moisture from air with dry bulb temperature _______.

• Aincreasing
• Bdecreasing
• Cremaining constant
• Dchanging any direction

Question 7

In simple harmonic motion, acceleration of a particle is proportional to

• Arate of change of velocity
• BDisplacement
• Cvelocity
• Ddirection

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