281. The coriolis component of acceleration leads the sliding velocity by
45°
90°
135°
180°
✅ The correct answer is option B.
Theory of machines MCQs
282. In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as
tractive force
swaying couple
hammer blow
none of these
✅ The correct answer is option C.
283. When two non-intersecting and non-coplaner shafts are connected by gears, the arrangement is known as helical gearing.
Right
Wrong
✅ The correct answer is option B.
284. When a slider moves on a fixed link having curved surface, their instantaneous centre lies
on their point of contact
at the centre of curvature
at the centre of circle
at the pin joint
✅ The correct answer is option B.
285. The power transmitted by a belt is maximum when the maximum tension in the belt is __________ of centrifugal tension.
one-third
two-third
double
three times
✅ The correct answer is option D.
286. In a gear having involute teeth, the normal to the involute is a tangent to the
pitch circle
base circle
addendum circle
dedendum circle
✅ The correct answer is option B.
287. The velocity of a body moving with simple harmonic motion is __________ at the mean position.
zero
minimum
maximum
✅ The correct answer is option C.
288. The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed.
sum
difference
product
ratio
✅ The correct answer is option D.
289. When a mechanism is required to transmit power or to do some particular type of work, then it becomes a machine.
Agree
Disagree
✅ The correct answer is option A.
290. The ball and socket joint is an example of screw pair.
Agree
Disagree
✅ The correct answer is option B.