These Metal Work questions and answers were pulled from our book (Metal Work questions for SS3); Compiled to serve as a reference material to help teachers draw up test and exam questions faster. It could also help students assess their level of exam preparation. Each sample question includes correct answers.
Sample Metal Work Exam Questions and Answers
BUFFING
DIRECTION: Choose the correct answer from the lettered options.
1. Operation may be done by ________.
i. hand with a stationary polisher
ii. Die grinder
iii. may be automated using specialized equipment
A. i only
B. ii only
C. iii only
D. i, ii and iii
2. In buffing, rough abrasives remove imperfections within the metal surface like ________.
i. pit
ii. nicks
iii. lines and scratches
A. iii only
B. i, ii and iii
C. i only
D. ii only
3. The sketch below is a metal finishing machine. It is a ________.
A. bench grinder
B. pedestral grinder
C. machine
D. sanding machine
4. The sketch below is a metal finishing machine. The part marked Y is the ________.
A. grinding wheel
B. pedestrial grinding wheel
C. wheel
D. sanding wheel
5. The compounds which are made into cakes were mixed with ________.
A. sand particles
B. metal particles
C. additives (sp)
D. tallow or heavy grease
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CASTING DEFECTS
1. Longitudinal facial crack which occurs in continuous casting processes is due to ________.
i. primary uneven cooling
ii. secondary uneven cooling
iii. molten steel poor chemical compositions qualities etc.
A. i only
B. ii only
C. iii only
D. i, ii and iii
2. Uneven cooling rates of casting may result in ________.
A. blow holer
B. cold shuts
C. hard spots
D. cracks
E. sponginess
3. The defect which occurs when the liquid melt leaks out the mould due to faulty mould or flask is called _________.
A. drops
B. scabs
C. run out
D. swell
4. Which of these methods of casting does not have a more robust mould?
A. Centrifugal casting
B. Die casting
C. Sand casting
D. Investment casting
5. Blowholes are caused by larger gas bubbles due to ________.
i. air entrained in the melt
ii. steam or smoke from the casting sand
iii. gases from the mould
A. i only
B. ii only
C. iii only
D. i, ii and iii
