Mechanical Interview Questions for Diploma/Degree
Q.1 > Euler’s formula is valid for?
Ans. Long Columns
Q.2> For thick walled shell, dia-thickness ratio is?
Ans. less than 20
Q.3> Monel metal is an alloy of ?
Ans. Nickel (52-67%) and Copper and small amounts of Fe, Mn, C, Si
Q.4> Which grinding process is used for high production run?
Ans. Surface Grinding.
Q.5> The most common type of drill is?
Ans. Twist Drill
Q.6> Which process results in best accuracy of hole?
Ans. Reaming.
Q.7> Nose radius is expressed in ?
Ans. mm, 0.2mm for finishing, 0.4mm, 0.8mm for roughing, 1.6mm
Q.8> Zinc alloy are preferentially cast by?
Ans. Die Casting
Q.9> Chaplet is used for?
Ans. to support the core
Q.10> What is the cost of machining per hour in CNC Milling M/c?
Ans. Rs. 1000/-
Q.11> What is the cost of machining per hour in CNC EDM/WEDM M/c?
Ans. Rs.1000/-
Q.12> What is the cost of machining per hour in 10micron Precision CNC Lathe M/c?
Ans. Rs. 580/-
Q.13> What are the electrode material commonly used for EDM?
Ans. 1. Copper ( cost effective but not capable of complicated chape)
2. Graphite ( Complicated shape can be generated, can be used number of times )
3. Brass
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