In which of the following mechanism the relative motions of the rigid bodies are in one plane or in parallel planes?
a) spatial mechanism
b) spherical mechanism
c) flexure mechanism
d) planar mechanism
Q.2.
If there are redundant constraints in the chain and it forms a statically indeterminate structure, what is the degree of freedom or the mobility of this structure?
a) More than 0
b) Less than 0
c) 1
d) 2
Q.3.
If the shortest link is fixed, what type of mechanism is obtained?
a) Crank rocker mechanism
b) Linkage is not planar
c) Double crank mechanism
d) Double rocker mechanism
Q.4.
What is the working depth of the gear and the pinion of the bevel gears?
a) 0.7 m, 2 m
b) 3 m, 0.4 m
c) 0.4 m, 3 m
d) 2 m, 0.7 m
Q.5.
Which of the following mechanism is an approximately straight-line motion mechanism?
a) Hart’s mechanism
b) Watt’s mechanism
c) Scott Russell’s mechanism
d) Peaucellier mechanism
Q.6.
__________ mechanism is a crossed four bar chain mechanism in early steam engines to guide the piston rod in a cylinder to have an approximate straight line motion.
a) Chebychev’s
b) Watt’s
c) Peaucellier’s
d) Grasshopper
Q.7.
For a Whitworth quick return motion mechanism β = 110°. Find the ratio of time of cutting stroke to time of return stroke.
a) 0.42
b) 0.44
c) 2.27
d) 2.37
Q.8.
Which of these is not a type of clutch?
a) Cylindrical
b) Centrifugal
c) Single disc
d) Conical
Q.9.
In a multi plate clutch, the formula for T is given by ______
a) n.µ.W.r1
b) n.µ.W.(r1+r2)
c) n.µ.W.R
d) n.µ.W.r2
Q.10.
In a conical clutch, the mean radius of the bearing surface ismm whereas the breadth ismm. Find the inner and outer radii. The semi cone angle is 30°.
a) 140 mm, 160 mm
b) 160 mm, 140 mm
c) 155 mm, 145 mm
d) 145 mm, 155 mm
Q.11.
If the outer and inner radius of the contact surfaces aremm andmm respectively and the semi cone angle is 22.5°, find the value of the face width required.
a) 65.33 mm
b) 89.43 mm
c) 23.87 mm
d) 78.94 mm
Q.12.
The smaller and generally the driving gear of a pair of mated gears is called _________
a) rack
b) pinion
c) module
d) pitch
Q.13.
The distance measured along the circumference of the pitch circle from a point on one tooth to the same point on the adjacent tooth is called ________________
a) circular pitch
b) line of centers
c) pitch diameter
d) pitch point
Q.14.
The locus of a point on the pitch circle from the beginning to end of engagement of two mating gears is called as ___________
a) Arc of contact
b) Path of contact
c) Path of approach
d) Arc of approach
Q.15.
The ratio of angle of action to the pitch angle is called ___________
a) angle of recess
b) contact ratio
c) space width
d) angle of approach
Q.16.
The angle turned by the gear from the beginning to the end of engagement of a pair of teeth is called ______________
a) angle of action
b) angle of contact
c) angle of recess
d) angle of approach
Q.17.
The condition which must be fulfilled by two gear tooth profiles to maintain a constant angular velocity ratio between them is called __________________
a) path of contact
b) interference
c) arc of contact
d) law of gearing
Q.18.
Velocity of sliding at the pitch point = (ωp + ωg) x _____________
a) arc of approach
b) path of contact
c) path of recess
d) 0
Q.19.
The distance travelled by a point on either pitch circle of the two wheels during the period of contact of a pair of teeth is called ____________________
a) angle of action
b) path of contact
c) arc of contact
d) contact ratio
Q.20.
The contact ratio is the ratio of arc of contact to the ____________
a) module
b) circular pitch
c) dedendum
d) circular pitch
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.