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February 2019

Cold cracking in the heat affected zone of a high strength steel weld can take place because of the___________________?

Chemical Engineering Basics /
Cold cracking in the heat affected zone of a high strength steel weld can take place because of the___________________?

A. Retained austenite
B. Martensite formation
C. Relatively high sulphur content in the base metal
D. Sufficient hydrogen present in the welding arc

Cold cracking in the heat affected zone of a high strength steel weld can take place because of the___________________? Read More »

Chemical Engineering Basics

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

Chemical Engineering Basics /
On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the ______________ of the input signal?

A. Frequency
B. Amplitude
C. Damg
D. None of these

On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the ______________ of the input signal? Read More »

Chemical Engineering Basics

Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________?

Chemical Engineering Basics /
Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________?

A. (r2 – r1)/r1. r2
B. r1. r2/(r2 – r1)
C. (r2 + r1)/r1. r2
D. r1. r2/(r2 + r1)

Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________? Read More »

Chemical Engineering Basics