Chemical Engineering - Chemical Engineering Basics

6. 

On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.

A. frequency
B. amplitude
C. damping
D. none of these

Answer: Option A

Explanation:

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7. 

Fire refining process is employed in case of

A. tin
B. copper
C. zinc
D. aluminium

Answer: Option B

Explanation:

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8. 

Larger length & diameter water pipes are made by

A. electrical resistance welding.
B. die casting.
C. semi-centrifugal casting.
D. continuous casting.

Answer: Option C

Explanation:

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9. 

Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of

A. 90% tungsten carbide and 10% cobalt.
B. 70% aluminium oxide & 30% silica.
C. 30% nickel, 15% chromium & 55% tungsten.
D. 65% tungsten & 35% zirconium.

Answer: Option A

Explanation:

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10. 

The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is termed as the

A. critical point.
B. curie temperature.
C. inversion temperature.
D. eutectic temperature.

Answer: Option B

Explanation:

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