MCQs Mechanical Engineering
1. Which of the following is not a type of industrial forging ?
(a) Drop forging
(b) Roll forging
(c )Blast forging
(d) Upset forging
Ans. C
2. Which of the following forging process necessarily increase the diameter of the work piece by compressing its length ?
(a) Hot forging
(b) Roll forging
(c )Upset forging
(d) Press forging
Ans. C
3. The cold working in which hardness of work is increased is called
(a) Work –hardening
(b) Age hardening
(c ) Flame hardening
(d) None of the above
Ans. A
4. Rolling , Forging etc, are examples of metal --------operations .
(a) Grinding
(b) Cutting
(c )Forming
(d) Drilling
Ans. C
5. Which is the false statement about electro discharge machining ?
(a) It can machine very hard material
(b) Very good surface finish is obtained
(c )Section to be machined should be thick
(d) Metal removal rate is very slow
Ans. C
6. Which one of the following is most important parameter for EDM ?
(a) Thermal capacity
(b) hardness
(C )Strength
(d) Geometry
Ans. B
7. In EDM process, the workpiece is connected to EDM
(a)Cathode
(b) Anode
(c )Earth
(d) None of the above
Ans. B
8. The following is not true for ECM :
(a) It can machine highly complicated shapes in a single pass
(b) Tool life is very high
(c )Machinability of the work material is independent of its physical and mechanical properties
(d) Kerosene is use as electrolyte
Ans. D
9. Electro –discharge machining uses the following dielectric fund :
(a) Kerosene
(b) Sodium bydroxide
(c ) Water
(d) Aqueous salt solution
Ans. A
10.Ultrasonic machining is best suited for :.
(a) Amorphous material
(b) Brittle material
(c )Non ferrous material
(d) All of the above
Ans. B
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