Engineering Mechanics | Mechanical Engineering

In a wormed geared pulley block, if the number of teeth on the worm wheel is doubled, then its velocity ratio is also doubled.

Byadmin September 14, 2022

Question: In a wormed geared pulley block, if the number of teeth on the worm wheel is doubled, then its velocity ratio is also doubled.
[A].

True

[B].

False

Answer: Option A

Explanation:

No answer description available for this question.

Hydraulic Machines | Mechanical Engineering

If the net positive suction head (NPSH) requirement for the pump is not satisfied, then

Question: If the net positive suction head (NPSH) requirement for the pump is not satisfied, then
[A].

no flow will take place
[B].
cavitation will be formed
[C].
efficiency will be low
[D].
excessive power will be consumed

Answer: Option B

Explanation:

No answer description available for this question.

Read More If the net positive suction head (NPSH) requirement for the pump is not satisfied, then
Engineering Mechanics

The center of gravity of a uniform lamina lies at____________________?

The center of gravity of a uniform lamina lies at____________________?

A. the center of heavy portion
B. the bottom surface
C. the mid point of its axis
D. all of the above
E. none of the above

Read More The center of gravity of a uniform lamina lies at____________________?
Automobile Engineering | Mechanical Engineering

In radial tyres

Question: In radial tyres
[A].

one ply layer runs diagonally one way and another layer runs diagonally the other way
[B].
all plies run parallel to one another and vertical to tyre bead
[C].
inner tubes are always used
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

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Engineering Mechanics | Mechanical Engineering

If the body falls freely under gravity, then the gravitational acceleration is taken as

Question: If the body falls freely under gravity, then the gravitational acceleration is taken as
[A].

+8.9 m/s2
[B].
-8.9 m/s2
[C].
+9.8 m/s2
[D].
-9.8 m/s2

Answer: Option C

Explanation:

No answer description available for this question.

Read More If the body falls freely under gravity, then the gravitational acceleration is taken as
Hydraulic Machines | Mechanical Engineering

If the ratio’s of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.

Question: If the ratio’s of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.
[A].

geometric similarity
[B].
kinematic similarity
[C].
dynamic similarity
[D].
none of these

Answer: Option C

Explanation:

No answer description available for this question.

Read More If the ratio’s of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.
Ic Engines And Nuclear Power Plants | Mechanical Engineering

Anti-knock for compression ignition engines is

Question: Anti-knock for compression ignition engines is
[A].

napthene
[B].
tetra ethyl lead
[C].
amyl nitrate
[D].
hexadecane

Answer: Option C

Explanation:

No answer description available for this question.

Read More Anti-knock for compression ignition engines is

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