Mechanical Engineering Archives

141. The sequence in which the force is transmitted through a brake system when the brake pedal is depressed is

brake pedal – master cylinder – brake lines – vacuum servo mechanism – brake pads

brake pedal – vacuum servo mechanism – master cylinder – brake lines – brake pads

brake pedal – master cylinder – vacuum servo mechanism – brake lines – brake pads

brake pedal – brake li

✅ The correct answer is option B.

142. A compound steam engine requires a heavier flywheel than simple steam engines.

TRUE

FALSE

✅ The correct answer is option B.

143. A diesel engine is __________ as compared to petrol engine, both running at rated load.

equally efficient

less efficient

more efficient

✅ The correct answer is option C.

144. When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

1.84(L – 0.1nH)H3/2

1.84(L – nH)H2

1.84(L – 0.1nH)H5/2

1.84(L – nH)H3

✅ The correct answer is option A.

145. In a four cylinder in-line engine, the number of firing strokes in one revolution of the crank is

✅ The correct answer is option B.

146. The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.

equal to

less than

more than

✅ The correct answer is option C.

147. A Watt’s governor is a spring loaded governor.

Yes

✅ The correct answer is option B.

148. The unit of dynamic viscosity in S.I. units is

N-m/s2

N-s/m2

poise

stoke

✅ The correct answer is option B.

149. The coriolis component of acceleration depends upon

velocity of slider

angular velocity of the link

both (a) and (b)

none of these

✅ The correct answer is option C.

150. In order to cut mild steel, the cutting angle of chisel should be

30°

45°

50°

60°

✅ The correct answer is option D.