A. D/4
B. D/2
C. 2d/3
D. D/3
✅ The correct answer is option A.
Engineering MCQs
Which of the following are considered applications of ultrasonic testing ?
A. Determination of elastic constant
B. Detection of defects in metal
C. Measurement of material thickness
D. None of the above
✅ The correct answer is option B.
Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be
A. More
B. Less
C. Same
D. Either more or less; depends on the climatic conditions
✅ The correct answer is option B.
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
A. 5
B. 1.25
C. 2.5
D. 3.75
✅ The correct answer is option A.
The trace metal present in insulin is
A. Cu
B. Zn
C. Fe
D. Ni
✅ The correct answer is option B.
The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres
A. 25
B. 35
C. 55
D. 75
✅ The correct answer is option C.
Oxygen cylinders used for autogenous (cutting/welding) purposes are
A. Seamless & made of steel
B. Heat treated before use
C. Made by sand casting
D. Welded steel cylinders
✅ The correct answer is option A.
Glass reacts with
A. H₂SO₃
B. HF
C. HNO₃
D. K₂Cr₂O₇
✅ The correct answer is option B.
Which of the following is an acidic constituent of B.F. slag ?
A. SiO₂
B. FeO
C. MgO
D. CaO
✅ The correct answer is option A.
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
A. Fracture
B. Dislocation
C. Slip
D. Twinning
✅ The correct answer is option C.