Top 150+ Solved Design of Machine Elements MCQ Questions Answer
Q. What is the amount of sea coal needed in cast irons for large green casting moulding sands?
a. 10%
b. 15%
c. 20%
d. 25%
Q. Which of the following increases the dry strength of the sand?
a. iron oxides
b. fuel oils
c. cereals
d. dextrin and molasses
Q. How much should fuel oil be added to increase the moulding ability of sand?
a. 0.01% – 0.1%
b. 0.02% – 0.2%
c. 0.03% – 0.3%
d. 0.04% – 0.4%
Q. Which of the following function can the spring perform?
a. store energy
b. absorb shock
c. measure force
d. all of the mentioned
Q. If spring index=2.5, what can be concluded about stresses in the wire?
a. they are high
b. they are negligible
c. they are moderate
d. cannot be determined
Q. If number of coils are 8 and wire diameter of spring 3mm, then solid length is given by?
a. none of the listed
b. 27mm
c. 24mm
d. 21mm
Q. Pitch of coil is defined as axial distance in compressed state of the coil.
a. yes
b. it is measured in uncompressed state
c. it is same in uncompressed or compressed state
d. none of the listed
Q. Active and inactive, both types of coils support the load although both don’t participate in spring action.
a. active coils don’t support the load
b. inactive coils don’t support the load
c. both active and inactive don’t support the load
d. both active and inactive support the load