Mechanical Engineering Objective Questions
11-Iron with little or no carbon is called
(A) Ferrite
(B) Sorbite
(C) Pearlite
(D) Martensite
12-Forging process for shaping round bars is called:
(A) Press forging
(B) Rotary forging
(C) Drop forging
(D) Billet
13-Drop forging comes under
(A) Smith die forging
(B) Impression die forging
(C) Power forging
(D) Hand forging
14-Necking down of work piece is done by
(A) Swages
(B) Fullers
(C) Flatters
(D) Set hammer
15-In anvil, hardie hole is used for
(A) Bending rods of small diameters
(B) Hot punching operation
(C) Holding square shanks
(D) Cutting operation
16-Hot die forging is also known as:
(A) Roll forging
(B) Embossing
(C) Isothermal forging
(D) Precision forging
17-Forging is a
- Hot working operation
- Cold working operation
- Operation that involves pressing
Of these statements
(A) (i) is true
(B) (ii) and (iii) are true
(C) (ii) is true
(D) (i) and (iii) are true
18-In forging operation, work piece is usually subjected to
(A) Tensile stress
(B) Shear stress
(C) Bending stress
(D) Compressive stress
19-The use of Fusible plug in a boiler is to:
(A) Extinguish the fire in case of low water level
(B) Prevent the leakage of steam from boiler
(C) Allow passage of only superheated steam from the boiler
(D) Keep the boiler pressure within prescribed limits
20-The tool is stationery and the work reciprocates in case of:
(A) Planer
(B) Milling machine
(C) Shaper
(D) Slotter
ANSWERS:
11-(A), 12-(B), 13-(B), 14-(B), 15-(C), 16-(C), 17-(D), 18-(D), 19-(A), 20-(C)