Chemical Engineering - Chemical Engineering Basics

41. 

In electrical resistance welding, distortion results from the use of improper

A. clamping methods
B. electrodes
C. current
D. filler material

Answer: Option A

Explanation:

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42. 

The conventional mechnical transducer, which converts pressure signal to displacement signal is

A. spring
B. manometer
C. strain gauge
D. none of these

Answer: Option B

Explanation:

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43. 

Pick out the wrong statement.

A. Seam welding, projection welding & spot welding are the classification of electrical resistance welding.
B. Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded)
C. In spot welding, two pieces to be joined are overlapped and placed between two electrodes.
D. Mild steel sheet can not be spot welded.

Answer: Option D

Explanation:

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44. 

Austempering of steel requires.it to be heated to 875°C followed by sudden cooling to 250-525°C, thereby changing austenite to

A. sorbite
B. bainite
C. martensite
D. troostite

Answer: Option B

Explanation:

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45. 

A compact estimate about the amount of materials handling between various work stations is obtained from the

A. gantt chart
B. bin chart
C. string diagram
D. travel chart

Answer: Option D

Explanation:

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