made by cold pressing of aluminium oxide powder
available in the form of tips
brittle and have low bending strength
all of these
✅ The correct answer is option D.
Mechanical Engineering MCQs
The basic characteristics of a brake fluid is
a high boiling point
low viscosity
compatibility with rubber and metal parts
all of these
✅ The correct answer is option D.
An infinite parallel planes with emissivities e1 and e2, the interchange factor for radiation from surface 1 to surface 2 is given by
e1 + e2
e1e2
✅ The correct answer is option A.
In bias ply tyres
all plies run parallel to one another
belts of steel mesh are used in the tyres
one ply layer runs diagonally one way and another layer runs diagonally the other way
all of the above
✅ The correct answer is option C.
According to Rowan plan of wage incentive system, bonus is paid to a worker
whose output exceeds 67% efficiency
on the percentage of time saved
on the percentage of time worked
on the percentage of s
✅ The correct answer is option C.
Beryllium bronze contains
60% copper and 40% beryllium
80% copper and 20% beryllium
97.75% copper and 2.25% beryllium
99% copper and 1% bery
✅ The correct answer is option C.
A type of brake commonly used in motor cars is a
shoe brake
band and block brake
band brake
internal expanding bra
✅ The correct answer is option D.
An air preheater
increases evaporative capacity of the boiler
increases the efficiency of the boiler
enables low grade fuel to be burnt
all of the above
✅ The correct answer is option D.
A mechanism is an assemblage of
two links
three links
four or more than four links
all of these
✅ The correct answer is option C.
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is __________ of the jet velocity
one-half
one-third
two-third
three-fourth
✅ The correct answer is option B.