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Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 6
41.
The uniform pressure theory gives a higher frictional torque than the uniform wear theory.
Agree
Disagree
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
The centrifugal tension on the belt has no effect on the power transmitted.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
The train value of a gear train is
equal to velocity ratio of a gear train
reciprocal of velocity ratio of a gear train
always greater than unity
always less than unity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral C Q NO. The acceleration of the piston P with respect to the crankpin C is given by
ω2 x NO
ω2 x CO
ω2 x CN
ω2 x QN
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
The driving and driven shafts connected by a Hooke's joint will have equal speeds, if
cos θ = sin α
sin θ = ±tan α
tan θ = ±cos α
cot θ = cos α
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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