castle nut
jam nut
ring nut
sawn nut
✅ The correct answer is option C.
Machine Design MCQs
Which of the following statement is correct for gears?
The addendum is less than dedendum
The pitch circle diameter is equal to the product of module and number of teeth
The pitch circle is always greater than the base circle
all of the above
✅ The correct answer is option D.
According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length)
d2 x τ x n
1.875 x d2 x τ x n
2 x d2 x τ x n
3 x d2x τ x n
✅ The correct answer is option B.
In second type of levers,
load is in between the fulcrum and effort
effort is in between the fulcrum and load
fulcrum is in between the load and effort
none of these
✅ The correct answer is option A.
In a flange coupling, the flanges are coupled together by means of
bolts and nuts
studs
headless taper bolts
none of these
✅ The correct answer is option A.
Stress concentration is caused due to
variations in load acting on a member
variations in properties of materials in a member
abrupt change of cross-section
all of these
✅ The correct answer is option C.
When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be
square threads
acme threads
knuckle threads
buttress threads
✅ The correct answer is option D.
The resistance to fatigue of a material is measured by
elastic limit
Young’s modulus
ultimate tensile strength
endurance limit
✅ The correct answer is option D.
The load cup of a screw jack is made separate from the head of the spindle to
enhance the load carrying capacity of the jack
reduce the effort needed for lifting the working load
prevent the rotation of load being lifted
reduce the value of frictional torque
✅ The correct answer is option C.
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)
d
1.5 d
2 d
2.5 d
✅ The correct answer is option B.