Mechanical Engineering Archives

4501. For any system of coplaner forces, the condition of equilibrium is that the

algebraic sum of the horizontal components of all the forces should be zero

algebraic sum of the vertical components of all the forces should be zero

algebraic sum of moments of all the forces about any point should be zero

all of the above

✅ The correct answer is option D.

4502. Two shafts will have equal strength, if

diameter of both the shafts is same

angle of twist of both the shafts is same

material of both the shafts is same

twisting moment of bot

✅ The correct answer is option D.

4503. The purpose of governing in steam turbines is to

maintain the speed of the turbine

reduce the effective heat drop

reheat the steam and improve its quality

completely balance aga

✅ The correct answer is option A.

4504. The aluminium alloy, mainly used, for anodized utensil manufacture, is

duralumin

Y-alloy

magnalium

hindalium

✅ The correct answer is option D.

4505. The relation between equivalent length (L) and actual length (l) of a column for one end fixed and the other end hinged is

L = l/2

L = l

L = 4l

✅ The correct answer is option B.

4506. In the below figure, curve D represents mild steel.

Yes

✅ The correct answer is option A.

4507. A governor is said to be stable, if the

radius of rotation of balls increases as the equilibrium speed decreases

radius of rotation of balls decreases as the equilibrium speed decreases

radius of rotation of balls increases as the equilibrium speed increases

radius of rotation of

✅ The correct answer is option C.

4508. In value engineering, important consideration is given to

customer satisfaction

function concept

profit maximisation

cost reduction

✅ The correct answer is option D.

4509. In a Diesel engine, the fuel is ignited by

an electric spark

the heat of compression

the hot exhaust

none of these

✅ The correct answer is option B.

4510. A right hand tool on a lathe cuts most efficiently when it travels

from left to right end of the lathe bed

from right to left end of the lathe bed

with the help of a compound slide

across the bed

✅ The correct answer is option B.