A. Length of the pipe
B. Diameter of the pipe
C. Density of the fluid
D. Velocity of the fluid
✅ The correct answer is option A.
Engineering MCQs
Electrostatic separation of minerals from each other is based on their differences in the following property.
A. Densities
B. Magnetic permeabilities
C. Electrical conductivities
D. Hardness
✅ The correct answer is option C.
Which of the following alloying elements is present in maximum percentage in high speed steel.
A. Molybdenum
B. Chromium
C. Tungsten
D. Vanadium
✅ The correct answer is option A.
__________ is not a heat treatment process.
A. Cyaniding
B. Pakerising
C. Austempering
D. Martempering
✅ The correct answer is option B.
Ceramic materials are
A. Organic in nature
B. Stronger in compression than in tension
C. Always amorphous in nature
D. Always bad heat conductors
✅ The correct answer is option B.
Thermal efficiency of an internal combustion engine is around __________ percent.
A. 8
B. 35
C. 65
D. 80
✅ The correct answer is option B.
Dew point temperature always gives an indication of the __________ of the moist air.
A. Dryness
B. Moisture content
C. Coolness
D. Latent heat
✅ The correct answer is option B.
Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.
A. 723
B. 959
C. 1147
D. 1493
✅ The correct answer is option A.
Ammonia leakage in the refrigeration system is detected by
A. Sulphur stick, which on detection gives white smoke
B. Using chemical reagents
C. Its smell
D. Soap solution
✅ The correct answer is option A.
The thickness of oxide film is y at time t. If K₁, K₂ and K₃ are the temperature dependent constants, the parabolic law of oxidation is given by
A. y² = 2k₁t + k₂
B. y = k₁ ln (k₂t + k₃)
C. y = k₁ t + k₂
D. y = k₁t³ + k₂
✅ The correct answer is option A.