remains constant
increases
decreases
✅ The correct answer is option A.
Engineering MCQs
The positive plates of a lead acid battery has
lead peroxide (PbO2)
spongy lead (Pb)
lead sulphate (PbSO4)
sulphuric acid (H2SO4)
✅ The correct answer is option A.
The loss of pressure head in case of laminar flow is proportional to
velocity
(velocity)2
(velocity)3
(velocity)4
✅ The correct answer is option A.
If a pendulum is taken 1 km below the earth surface in a mine, it will __________ in time.
gain
loose
✅ The correct answer is option A.
High speed steel drills can be operated at about __________ the speed of high carbon steel drills.
one-half
one-fourth
double
four times
✅ The correct answer is option C.
The moment of inertia of a thin rod of mass m and length l,about an axis through its centre of gravity and perpendicular to its length is
ml2/4
ml2/ 6
ml2/8
ml2/12
✅ The correct answer is option D.
A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is
5367 r.p.m.
6000 r.p.m.
9360 r.p.m.
12000 r.p.m.
✅ The correct answer is option A.
Lancing is the operation of
cutting a sheet of metal in a straight line along the length
removal of metal to the desired shape from the edge of a plate
cutting a sheet of metal through part of its length and then bending the cut portion
bending a sheet of met
✅ The correct answer is option C.
The essential constituent of a hardened steel is
pearlite
austenite
martensite
troostite
✅ The correct answer is option C.
A low wet bulb temperature indicates very __________ humidity.
low
high
✅ The correct answer is option A.