181. The spring mostly used in gramophones is
helical spring
conical spring
flat spiral spring
volute spring
✅ The correct answer is option C.
Machine Design MCQs
182. In the levers of __________ type, the mechanical advantage is less than one.
first
second
third
✅ The correct answer is option C.
183. The elasticity is the property of a material which enables it to
regain its original shape after deformation when the external forces are removed
draw into wires by the application of a tensile force
resist fracture due to high impact loads
retain deformation pro
✅ The correct answer is option A.
184. The face angle of a bevel gear is equal to
pitch angle – addendum angle
pitch angle + addendum angle
pitch angle – dedendum angle
pitch angle + dedendum
✅ The correct answer is option B.
185. A wood-ruff key is
a tapered key with head at one end
fitted in pairs at right angles
capable of tilting in a recess milled out in the shaft
all of the above
✅ The correct answer is option C.
186. The bending stress in a curved beam is
zero at the centroidal axis
zero at the point other than centroidal axis
maximum at the neutral axis
none of these
✅ The correct answer is option B.
187. The spindles of bench vices are usually provided with knuckle threads.
Agree
Disagree
✅ The correct answer is option B.
188. In a steam engine, the piston rod is usually connected to the crosshead by means of a
knuckle joint
cotter joint
oldham coupling
universal joint
✅ The correct answer is option B.
190. The period during which the cam follower remains at rest, when cam moves, is known as
constant period
fixed period
dwell period
idle period
✅ The correct answer is option C.