Chemical Engineering - Chemical Engineering Basics

41. 

Flywheel is provided in a machine to

A. provide structural strength to the shaft.
B. smoothen the power impluses.
C. help in quick starting of the machine.
D. none of these.

Answer: Option B

Explanation:

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42. 

Nickel is a __________ material.

A. ferromagnetic
B. semi-conductor
C. paramagnetic
D. ferroelectric

Answer: Option A

Explanation:

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43. 

Grey cast iron (used for making underground water pipes and manhole covers) as compared to steel has higher

A. ductility
B. impact strength
C. machinability
D. melting point

Answer: Option C

Explanation:

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44. 

L.D. converters are generally lined with

A. magnesite
B. fireclay
C. chrome magnesite
D. silica

Answer: Option C

Explanation:

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45. 

When the weight of a ball inside the ball mill is just balanced by the centrifugal force,

A. the ball abandons its circular path for a parabolic path.
B. the ball abandans its parabolic path for a circular path.
C. the ball continues to move on a circular path.
D. the ball continues to move on a parabolic path.

Answer: Option A

Explanation:

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