MCQs on Forging
1. In cold working of metals, the temperature of metal is ______________.
(a) Room temperature
(b) Higher than room temperature
(c) Above recrystallization temperature
(d) Below recrystallization temperature
2. In hot working of metals, the temperature of metal is _________________.
(a) Room temperature
(b) Higher than room temperature
(c) Above recrystallization temperature
(d) Below recrystallization temperature
3. In cold working metals are worked below ___________ temperature.
(a) Room
(b) Recrystallization
(c) Both A & B
(d) None
4. The strength & hardness of metal ____________ in cold working processes.
(a) Increases
(b) Decreases
(c) Both A & B
(d) None
5. In open die forging the hot metal is shaped between __________.
(a) Two flat dies
(b) Two closed dies
(c) Two punches
(d) None
6. Closed die forging is also called ___________.
(a) Impression die
(b) Float die
(c) Open die
(d) None
7. Press forging is a ____________.
(a) Fast squeezing action
(b) Slow squeezing action
(c) No squeezing action
(d) None
8. The mechanical press is operated by
(a) Hydraulic pressure
(b) Air pressure
(c) Electric motor
(d) None
9. Crank & toggle joint is used in ____________.
(a) Hydraulic press
(b) Mechanical press
(c) Hand operated press
(d) None
10. The forging machine which utilizes the force of gravity for it's operations is ___________.
(a) Hydraulic hammer
(b) Board drop hammer
(c) Pneumatic hammer
(d) Spring hammer
11. Board drop hammer is used for forging ____________.
(a) Small size
(b) Heavy size
(c) Large size
(d) None
12. Hand hammers are suitable for forging __________.
(a) Small parts
(b) Medium parts
(c) Heavy parts
(d) None
Answers: 1.(d), 2.(c), 3.(b), 4.(a), 5.(a), 6.(a), 7.(b), 8.(c), 9.(b), 10.(b), 11.(a), 12.(a).
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