Production Engineering
JKSSB Junior Engineer (Mechanical) · Material Science & Production Engineering · 36 practice questions with answers and explanations: 10 Easy, 26 Medium, 0 Hard.
Sample questions
Sample Easy question 1
Cutting internal threads in a hole is called:
- tapping
- knurling
- counter-boring
- reaming
Show answer
Answer: A. The internal thread is cut with a tap.
Sample Easy question 2
The process of pouring molten metal into a mould to obtain a solid shape is called:
- rolling
- extrusion
- forging
- casting
Show answer
Answer: D. Casting is one of the oldest shaping processes.
Sample Easy question 3
The allowance given on a pattern so that the casting can be machined to the final size is the:
- draft allowance
- shake allowance
- machining allowance
- shrinkage allowance
Show answer
Answer: C. Extra material is left for finishing.
Sample Medium question 4
A positive rake angle on a cutting tool:
- increases the cutting force
- reduces cutting force and power
- has no effect on the chip
- weakens nothing
Show answer
Answer: B. The tool edge becomes sharper but weaker.
Sample Medium question 5
A built-up edge is formed on a cutting tool when machining:
- brittle materials at high speed
- glass
- any material at very high speed
- ductile materials at low cutting speed
Show answer
Answer: D. Work material welds onto the tool face.
Sample Medium question 6
Discontinuous chips are formed when machining:
- brittle materials such as cast iron
- copper with a large rake
- aluminium at high speed
- mild steel at high speed
Show answer
Answer: A. The material fractures into small segments.