2025 Mechanical Engineering Test Questions and Answers
1.Tachometer: Device used to measure accurately speed.
2.: The allowance is said to be negative when the hole is smaller than th
shaft.
3.Conservation of momentum: Law used to solve for the resulting
velocity when two elastic bodies collide.
4.Plasticity: The ability of a metal to be deformed considerably without
rupture.
5.Kinematics: A science of motion that can be solved in terms of scalar
or vector algebra.
6.Equilibrium: A system of forces in space is in equilibrium when two
equal and opposite collinear forces are added.
7.Babbitt: Metal that assists lubrication or is a lubricant in itself.
8.Dividing head: A mechanism which usually does the indexing in a
machine tool.
9.Flywheel: It equalizes the energy exerted and the work done thus
preventing excessive or sudden changes of speed.
10.Percentage reduction of area: The smallest area at the point of
rupture of a tensile specimen divided by the original area.
11.Linear impulse: The product of the resultant of all forces acting on a
body and the time that the resultant acts.
12.Tool and die steel: Not a structural class of steel.
13.Poison's ratio: The ratio of lateral strain to longitudinal strain.
14.Elastic limit to proportional limit: All are associated with the grade of
1/
15
, steel except.
15.Strength: The maximum stress to which a material may be
subjected before failure occurs.
16.Hypoid gear: A special type of gear like a bevel gear.
17.Maximum safe center distance: Considered to be 80 pitches to avoid
catenary tension in the chain.
18.Cold working: Makes the metal harder.
19.Cutting angle of drill: Recommended best cutting angle for work on
steel or cast iron is 50 degrees.
20.Breaking stress: In shear pin or breaking pin design, the breaking
stress is 50 ksi.
21.Dynamics: Deals only with the motion of bodies without reference to
the forces that cause them.
22.Ductility: The property that characterizes a material's ability to be
drawn into a wire.
23.Spur gear tooth breakage: One of the causes is the unbalanced load
on one end of the tooth that results in higher stresses.
24.Face width 'b': Should not be greater than the thickness (or pitch) of
the tooth.
25.Three moment equation: May be used to analyze continuous beam.
26.Common shop practice to prevent solder from running away: Surround
the work with clay.
27.Non-ferrous filler metal: Melted into grooves or as fillet on the
mother metal; the base metal is not melted.
28.Initial tension for rubber belts application: Should have an initial
2/
15
1.Tachometer: Device used to measure accurately speed.
2.: The allowance is said to be negative when the hole is smaller than th
shaft.
3.Conservation of momentum: Law used to solve for the resulting
velocity when two elastic bodies collide.
4.Plasticity: The ability of a metal to be deformed considerably without
rupture.
5.Kinematics: A science of motion that can be solved in terms of scalar
or vector algebra.
6.Equilibrium: A system of forces in space is in equilibrium when two
equal and opposite collinear forces are added.
7.Babbitt: Metal that assists lubrication or is a lubricant in itself.
8.Dividing head: A mechanism which usually does the indexing in a
machine tool.
9.Flywheel: It equalizes the energy exerted and the work done thus
preventing excessive or sudden changes of speed.
10.Percentage reduction of area: The smallest area at the point of
rupture of a tensile specimen divided by the original area.
11.Linear impulse: The product of the resultant of all forces acting on a
body and the time that the resultant acts.
12.Tool and die steel: Not a structural class of steel.
13.Poison's ratio: The ratio of lateral strain to longitudinal strain.
14.Elastic limit to proportional limit: All are associated with the grade of
1/
15
, steel except.
15.Strength: The maximum stress to which a material may be
subjected before failure occurs.
16.Hypoid gear: A special type of gear like a bevel gear.
17.Maximum safe center distance: Considered to be 80 pitches to avoid
catenary tension in the chain.
18.Cold working: Makes the metal harder.
19.Cutting angle of drill: Recommended best cutting angle for work on
steel or cast iron is 50 degrees.
20.Breaking stress: In shear pin or breaking pin design, the breaking
stress is 50 ksi.
21.Dynamics: Deals only with the motion of bodies without reference to
the forces that cause them.
22.Ductility: The property that characterizes a material's ability to be
drawn into a wire.
23.Spur gear tooth breakage: One of the causes is the unbalanced load
on one end of the tooth that results in higher stresses.
24.Face width 'b': Should not be greater than the thickness (or pitch) of
the tooth.
25.Three moment equation: May be used to analyze continuous beam.
26.Common shop practice to prevent solder from running away: Surround
the work with clay.
27.Non-ferrous filler metal: Melted into grooves or as fillet on the
mother metal; the base metal is not melted.
28.Initial tension for rubber belts application: Should have an initial
2/
15
