Machine Design Elements Comprehensive Questions
And Answers Latest upload 2024/2025 with 100% verified
Solution
Ratio of unit lateral deformation to unit longitudinal deformation
a. Poisson's ratio
b. strain
c. elongation
d. Modulus of elasticity - ANSWER-a. modulus of elasticity
A lathe with multiple cutting stations
a. turret lathe
b. lathe
c. shaper
d. none of the above - ANSWER-a. turret lathe
Nominal diameter of bolts is the
a. major diameter
b. minor diameter
c. pitch diameter
d. base diameter - ANSWER-a. major diameter
Major and minor diameters are commonly used in
a. screw thread
b. bolts
c. gear
d. all of these - ANSWER-a. screw thread
,The distance a helical gear or worm thread along its axis in one revolution if it were free to move axially
is called
a. length if action
b. line of action
c. land
d. lead - ANSWER-d. lead
length of contact between two mating parts in a screw and nut threads measured axially is called
a. arc of contact
b. depth of engagement
c. length of engagement
d. axis of contact - ANSWER-c. length of engagement
If the velocity of a mass is small all the time during which motion takes place is called
a. deceleration
b. uniform motion
c. acceleration
d. none of these - ANSWER-b. uniform motion
Also called eccentrically loaded bearing is
a. full bearings
b. offset bearings
c. partial bearing
d. fitted bearings - ANSWER-b. offset bearings
In the selection of wire rope, regular lay means wires and strands are arranged in the following manner
a. twisted in the same direction
b. twisted in any direction
c. twisted in opposite direction
,d. twisted in along direction - ANSWER-c. twisted in opposite direction
In involute teeth, the pressure angle is often defined as the angle between the line of action and the line
of tangent to the pitch circle. It is also termed as
a. helix angle
b. angle of recess
c. angle of obliquity
d. arc if action - ANSWER-c. angle of obliquity
Height of tooth above pitch circle or the radial distance between pitch circle and top land of the tooth
a. top root
b. addendum
c. land
d. hunting tooth - ANSWER-b. addendum
The function of clutch is
a. lowering of drive speed
b. alignment of drive shaft
c. to disconnect or connect the
drive at will
d. to insure that two shafts line up
at high speed - ANSWER-c. to disconnect or connect
the drive at will
It is normally recommended and normal for a designer to add a hunting tooth to evenly distribute the
wear on meshing teeth like a 53 teeth gears with 30 teeth pinion. Find the rotation of pinion to mesh
with same pair of teeth again.
a. 120
b. 81
c. 61
, d. 53 - ANSWER-d. 53
The angle made by the helix of the thread (in a straight head) at the pitch diameter with a plabe
perpendicular to the axis is called
a. lead angle
b. truncation
c. lead
d. angle of thread - ANSWER-a. lead angle
The rule of thumb in journal bearing design, the clearance ratio/clearance should be
a. 0.0099
b. 0.0042
c. 0.0010
d. 0.00120 - ANSWER-c. 0.0010
The moment of inertia of a rectangle whose base is "b" and height "h" abour its base is
a. bh³/4
b. bh³/12
c. bh³/24
d. bh³/3 - ANSWER-d. bh³/3
Cold rolled shafting is not available in diameter larger than _____.
a. 6 inches
b. 5 inches
c. 6 1/2 inches
d. 5 1/2 inches - ANSWER-b. 5 inches
The cast iron flywheels designed with a factor of safety of _____
a. 14 to 15
And Answers Latest upload 2024/2025 with 100% verified
Solution
Ratio of unit lateral deformation to unit longitudinal deformation
a. Poisson's ratio
b. strain
c. elongation
d. Modulus of elasticity - ANSWER-a. modulus of elasticity
A lathe with multiple cutting stations
a. turret lathe
b. lathe
c. shaper
d. none of the above - ANSWER-a. turret lathe
Nominal diameter of bolts is the
a. major diameter
b. minor diameter
c. pitch diameter
d. base diameter - ANSWER-a. major diameter
Major and minor diameters are commonly used in
a. screw thread
b. bolts
c. gear
d. all of these - ANSWER-a. screw thread
,The distance a helical gear or worm thread along its axis in one revolution if it were free to move axially
is called
a. length if action
b. line of action
c. land
d. lead - ANSWER-d. lead
length of contact between two mating parts in a screw and nut threads measured axially is called
a. arc of contact
b. depth of engagement
c. length of engagement
d. axis of contact - ANSWER-c. length of engagement
If the velocity of a mass is small all the time during which motion takes place is called
a. deceleration
b. uniform motion
c. acceleration
d. none of these - ANSWER-b. uniform motion
Also called eccentrically loaded bearing is
a. full bearings
b. offset bearings
c. partial bearing
d. fitted bearings - ANSWER-b. offset bearings
In the selection of wire rope, regular lay means wires and strands are arranged in the following manner
a. twisted in the same direction
b. twisted in any direction
c. twisted in opposite direction
,d. twisted in along direction - ANSWER-c. twisted in opposite direction
In involute teeth, the pressure angle is often defined as the angle between the line of action and the line
of tangent to the pitch circle. It is also termed as
a. helix angle
b. angle of recess
c. angle of obliquity
d. arc if action - ANSWER-c. angle of obliquity
Height of tooth above pitch circle or the radial distance between pitch circle and top land of the tooth
a. top root
b. addendum
c. land
d. hunting tooth - ANSWER-b. addendum
The function of clutch is
a. lowering of drive speed
b. alignment of drive shaft
c. to disconnect or connect the
drive at will
d. to insure that two shafts line up
at high speed - ANSWER-c. to disconnect or connect
the drive at will
It is normally recommended and normal for a designer to add a hunting tooth to evenly distribute the
wear on meshing teeth like a 53 teeth gears with 30 teeth pinion. Find the rotation of pinion to mesh
with same pair of teeth again.
a. 120
b. 81
c. 61
, d. 53 - ANSWER-d. 53
The angle made by the helix of the thread (in a straight head) at the pitch diameter with a plabe
perpendicular to the axis is called
a. lead angle
b. truncation
c. lead
d. angle of thread - ANSWER-a. lead angle
The rule of thumb in journal bearing design, the clearance ratio/clearance should be
a. 0.0099
b. 0.0042
c. 0.0010
d. 0.00120 - ANSWER-c. 0.0010
The moment of inertia of a rectangle whose base is "b" and height "h" abour its base is
a. bh³/4
b. bh³/12
c. bh³/24
d. bh³/3 - ANSWER-d. bh³/3
Cold rolled shafting is not available in diameter larger than _____.
a. 6 inches
b. 5 inches
c. 6 1/2 inches
d. 5 1/2 inches - ANSWER-b. 5 inches
The cast iron flywheels designed with a factor of safety of _____
a. 14 to 15
