A. The movement of ions
B. The movement of molecules
C. Allowing electrons to flow through them from cathode to anode
D. Movement of electric charge through them
✅ The correct answer is option A.
Engineering MCQs
Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
A. Invar
B. Hastealloy
C. Duralumin
D. Monel metal
✅ The correct answer is option A.
Gratings is associated with the measurement of
A. Linear displacement
B. Concavity/convexity
C. Surface texture
D. Flatness
✅ The correct answer is option A.
Filler material used in welding having the lowest melting point out of the following is
A. Aluminium
B. Soft solder
C. Silver solder
D. Brazing spelter
✅ The correct answer is option B.
The atmospheric temperature during melting of ice/snow (in the atmosphere)
A. Decreases
B. Increases
C. Remains same
D. May increase or decrease ; depends on the altitude where snow melts
✅ The correct answer is option A.
Steel balls are manufactured by cold heading. After cold forming, they are subjected to
A. Tempering
B. Normalising
C. Stress-relieving
D. Artificial ageing
✅ The correct answer is option C.
Austenite is not
A. Ductile
B. Malleable
C. Magnetic
D. Soft
✅ The correct answer is option C.
Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.
A. Working
B. Bearing
C. Yield
D. None of these
✅ The correct answer is option A.
__________ is the most important element, which controls the physical properties of steel.
A. Manganese
B. Silicon
C. Carbon
D. Vanadium
✅ The correct answer is option C.
A polymer is termed as an ‘elastomer’, if its percentage elongation is more than 100%. An elastomer is termed as ‘rubber’ if its percentage elongation is more than __________ percent.
A. 150
B. 200
C. 300
D. 400
✅ The correct answer is option B.