1. Draft on pattern means

b) Allowance for machining

c) Locating pad

d) Compensate for stripping

e) Compensation for shrinkage

Ans.: d) Compensate for stripping


2. Slag inclusion in the casting is a

a) Surface defects

b) Internal defect

c) Crack

d) Notch

Ans.: a) Surface defects


3. Fettling is an operation performed

a) Before casting

b) After casting

c) During casting

d) After heat treatment

Ans.: b) After casting


4. Sprue in casting refers to

a) Gate

b) Runner

c) Riser

d) Vertical passage

Ans.: d) Vertical passage


5. Severe quenching can cause

a) Blow holes

b) Warping

c) Inclusions

d) Non of them

Ans.: b) Warping


6. Casting defects caused by the molten metal is

a) Blow holes

b) Swell

c) Scab

d) All of the above

Ans.: d) All of the above


7. Forming operation which does not involve rotation of work piece is

a) Spinning

b) Thread rolling

c) Ring rolling

d) Upsetting

Ans.: d) Upsetting


8. In hot working process

a) Poor surface finish is produced

b) Scale formed

c) Close tolerance is difficult to maintain

d) All of the above

Ans.: d) All of the above


9. Swaging is an operation of

a) Extrusion

b) Forging

c) Casting

d) Rolling

Ans.: b) Forging


10. Age hardening is related with

a) Stainless steel

b) Duralumin

c) Gun metal

d) Cast iron

Ans.: b) Duralumin


11. Foundry crucible is made of

a) Stainless steel

b) Mild steel

c) Lead

d) Graphite

Ans.: d) Graphite

Olympus Digital Camera

12. A 1000 tonne press implies that

a) The weight of press is 1000 tonne

b) The press can handle works weighing up to 1000 tonne

c) It can exert pressure up to 1000 tonne

d) Its turn over in a day is 1000 tonne

Ans.: c) It can exert pressure up to 1000 tonne


13. The transistor is made of

a) Silver

b) Germanium

c) Copper

d) Cast iron

Ans.: b) Germanium


14. Pre heating is essential in welding of

a) High speed steel

b) German steel

c) Stainless steel

d) Cast iron

Ans.: a) High speed steel


15. Spring back phenomenon occurs in

a) Forging

b) Hot penning

c) Spinning

d) Bending

Ans.: d) Bending


16. Wire is made by

a) Drawing

b) Forging

c) Rolling

d) Casting

Ans.: a) Drawing


17. Greater forging capacity is achieved with

a) Mechanical press

b) Power hammer

c) Hydraulic press

d) Non of them

Ans.: c) Hydraulic press


18. Turbine rotor is made by

a) Rolling

b) Sand casting

c) Forging

d) Extrusion

Ans.: b) Sand casting


19. Which of the following welding process uses consumable electrodes

a) TIG

b) MIG

c) Thermit

d) Laser

Ans.: b) MIG


20. The phenomenon of weld decay occurs in

a) Cast iron

b) Brass

c) Bronze

d) Stainless steel

Ans.: d) Stainless steel


21. The crystal structure of alpha iron

a) BCC

b) FCC

c) HCP

d) Cubic

Ans.: a) BCC


22. The hardest known material is

a) Ceramic

b) High speed steel

c) Cemented carbide

d) Diamond

Ans.: d) Diamond


23. Which of the following is the most ductile material

a) Lead

b) Copper

c) Mild steel

d) Vanadium

Ans.: a) Lead


24. Brinell hardness tester uses a hardened steel ball of size

a) 1 mm

b) 5 mm

c) 10 mm

d) 15 mm

Ans.: c) 10 mm


25. Trimming process is associated with

a) Polishing of metals

b) Machining

c) Electroplating

d) Forging

Ans.: d) Forging

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