Which hardening process is generally not used for steels?

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Question:

Which hardening process is generally not used for steels?

Age hardening

Pack carburising

Induction hardening

Nitriding

Answer» a. Age hardening

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Compressive strength is highest in case of

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Question:

Compressive strength is highest in case of

Mild steel

Wrought iron

High carbon steel

Cast iron

Answer» c. High carbon steel

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Corrosion is a destructive attack on metals

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Question:

Corrosion is a destructive attack on metals

Which may be chemical or electrochemical in nature

Which is basically caused by atmospheric air

Which is caused by contact with other metals

At high temperature

Answer» a. Which may be chemical or electrochemical in nature

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Which of the following flow measuring instrument is an area meter?

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Question:

Which of the following flow measuring instrument is an area meter?

Venturimeter

Rotameter

Pitot tube

Hot wire anemometer

Answer» b. Rotameter

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In press work the dies that perform two or more operations simultaneously, but at different stations are known as

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Question:

In press work the dies that perform two or more operations simultaneously, but at different stations are known as

Multi-dies

Simple dies

Compound dies

Die and punch set

Answer» e. Progressive dies

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In iron-iron carbide diagram the

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Question:

In iron-iron carbide diagram the

Abscissa is time

Abscissa is temperature

Abscissa is carbon percentage

Ordinate is time

Answer» c. Abscissa is carbon percentage

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Ferri-magnetic materials generally find application as

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Question:

Ferri-magnetic materials generally find application as

conductors

insulators

resistors

semi-conductors

Answer» d. semi-conductors

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For a four cylinder engine operating at N rpm, the contact breaker must make and break thecircuit

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Question:

For a four cylinder engine operating at N rpm, the contact breaker must make and break thecircuit

N times

2N times

N/2 times

none of the above

Answer» b. 2N times

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If the contact breaker gap is small, it results in

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Question:

If the contact breaker gap is small, it results in

advanced timing

increased dwell

rapid burning of the pointer gaps

none of the above

Answer» c. rapid burning of the pointer gaps

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A 5 BHP engine running at full load would consume diesel of the order of

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Question:

A 5 BHP engine running at full load would consume diesel of the order of

0.3 kg/hr

1 kg/hr

3 kg/hr

5 kg/hr

Answer» b. 1 kg/hr

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» Internal Combustion Engines (I.C. Engines) solved MCQs

Mechanical Engineering

Which hardening process is generally not used for steels?

Compressive strength is highest in case of

Corrosion is a destructive attack on metals

Which of the following flow measuring instrument is an area meter?

In press work the dies that perform two or more operations simultaneously, but at different stations are known as

In iron-iron carbide diagram the

Ferri-magnetic materials generally find application as

For a four cylinder engine operating at N rpm, the contact breaker must make and break thecircuit

If the contact breaker gap is small, it results in

A 5 BHP engine running at full load would consume diesel of the order of