A. 0.5
B. 0.9
C. 1.5
D. 2.5
✅ The correct answer is option C.
Engineering MCQs
Out of the following, the most melleable material is
A. Copper
B. Aluminium
C. Wrought iron
D. Lead
✅ The correct answer is option D.
Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.
A. Flanged iron
B. Collar
C. Flexible
D. Expansion
✅ The correct answer is option B.
With increase in temperature, the electrical conductivity of a __________ decreases.
A. Semi-conductor
B. Metal or alloy
C. Dielectric
D. None of these
✅ The correct answer is option A.
Which of the following is categorised as the plastic welding?
A. Gas welding
B. Electric arc welding
C. Forge welding
D. None of these
✅ The correct answer is option C.
Wrought iron is never shaped by
A. Casting
B. Cold working
C. Forging
D. Welding
✅ The correct answer is option A.
Basic open hearth furnace (BOF) is not used for producing __________ steel.
A. Killed
B. Rimming
C. High alloy
D. None of these
✅ The correct answer is option C.
Grey cast iron (used for making underground water pipes and manhole covers) as compared to steel has higher
A. Ductility
B. Impact strength
C. Machinability
D. Melting point
✅ The correct answer is option C.
Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode
A. Occurs higher in the electro-chemical series of metals
B. Is exemplified by magnesium plate
C. Is much cheaper than the cathodic base material to be guarded against corrosion
D. All of the above
✅ The correct answer is option D.
Uniform ramming of sand in green sand moulding process leads to
A. Reduced chance of gas porosity
B. Greater dimensional stability of the casting
C. Uniform flow of molten metal into the mould cavity
D. Less sand expansion type of casting defect
✅ The correct answer is option B.