14406. Which of the following material has nearly zero coefficient of expansion?

By Admin / September 13, 2025

Stainless steel

High speed steel

Invar

Heat resisting steel

✅ The correct answer is option C.

14401. When the pressure intensity at a point is less than the local atmospheric pressure, then the difference of these two pressures is called vacuum pressure.

14412. When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

1. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm².

Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin

2. Transformer cores are normally made from

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