Ordinary level 2024 South West mock material technology 1
Ordinary level 2024 South West mock material technology 1
I Ilie process in which enrbon and nitrogen gel absorbed by lite
mewl Mirfnee to get it hardened is known ns
A Induciion hardening
H Flume hardening
C, Cyuniding
D. Cnrbttrizing
2 Annealing is n.
A, ease hardening process.
B. tempering process.
C. grain refining process.
D full hardening process.
3. Chemical fonnuln of rust is
A. FciOt
B. FcO
C. Fe,Oi
D. Fc-OjXHjO
A. Which hardness tester uses a diamond-pyramid indcnlcr to
measure the penetration inio n mclal under a specified load?
A Brinell hardness tester
B Webster hardness tester
C Rockwell hardness tester
D Vickers hardness tester
5 A fine scnes screw thread of 20 mm diameter with a pilch of
1 25 mm is designated as:
A 020×1.25
B 01.25×20
C M 20 x 125
D Ml.25×20
6 A device used for cutting a screw thread in an internal hole in
a nut or other piece of metal is:
A a knife
B a lap
C a dice
D a saw
7. Crankshafts arc usually made from.
A Casi iron
B Aluminium alloy
C steel
D copper
8. The most commonly used material for tyre tubes is
A Natural rubber
B Butyl
C Butnnc
5 Black rubber
9. Cylinder heads fire preferably made from
A. alloy steels
B. Copper alloy
C.
D.
Aluminium alloy
Wrought iron
10. Valves arc preferably inndc from”
A, low carbon steels
B. High carbon steels
C. Silicon-chromium steels
D. Medium carbon steels
1 1.The object of rendering steel as ductile as possible is known
as:
A. Normalizing
B. Tempering
C.
D.
Hardening
Annealing
