A. T₁/(T₁-T₂)
B. T₂/(T₁-T₂)
C. T₁/T₂
D. T₂/T₁
✅ The correct answer is option B.
Engineering MCQs
‘End cooler’ or ‘after cooler’ is employed in air compressor mainly to
A. Remove oil vapour or moisture from air
B. Cool the dry air before use
C. Reduce the volumetric capacity of receiver
D. None of these
✅ The correct answer is option A.
Frost formation on the evaporator tubes in the domestic refrigerators
A. Can be prevented by proper design
B. Decreased compressor power
C. Causes heat loss due to poor heat transfer
D. Is immaterial
✅ The correct answer is option C.
Notched bar test is used for testing the __________ of a material.
A. Impact strength
B. Endurance limit
C. Machinability
D. Corrosion resistance
✅ The correct answer is option A.
A static fluid can not have
A. Zero shear stress
B. Positive normal stress
C. Non-zero shear stress
D. None of these
✅ The correct answer is option C.
A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution.
A. Neutral
B. Ideal
C. Buffer
D. Zero pH
✅ The correct answer is option C.
Deformation band is absent in materials having __________ lattice crystal structure.
A. Fcc
B. Bcc
C. Hcp
D. None of these
✅ The correct answer is option C.
The Al2 O₃ content of cryolite in Hall-Heroult’s cell is maintained between __________ percent.
A. 2-5
B. 18-20
C. 12-15
D. 6-12
✅ The correct answer is option A.
Circulation of liquid metal (i.e. molten sodium) in a liquid metal cooled nuclear reactor is done by a/an __________ pump.
A. Electromagnetic
B. Axial flow
C. Diaphragm
D. Reciprocating
✅ The correct answer is option A.
Which of the following does not lower the surface tension of liquids ?
A. Fat
B. Soap
C. Detergent
D. Surfactant
✅ The correct answer is option A.