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ESE ME 2018 Achiever Study Plan: Theory of Machines Quiz 5
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Question 1
Find transmissibility of vibration when ratio of excitation frequency and natural frequency of vibration is √2?
Question 2
Which of the following mechanisms are examples of forced closed kinematic pairs?
1) Cam and roller mechanism
2) Door-closing mechanism
3) Slider-crank mechanism
Select the correct answer using the code given below.
1) Cam and roller mechanism
2) Door-closing mechanism
3) Slider-crank mechanism
Select the correct answer using the code given below.
Question 3
for a speed ratio of 100 smallest gear box is obtained by using which of the following?
Question 4
The given figure shows the turning moment diagram of an engine. The mean speed of prime mover is 
and the mass moment of inertia is 
, then what is the coefficient of fluctuation of energy?
and the mass moment of inertia is , then what is the coefficient of fluctuation of energy? Question 5
The figure as shown below is a rigid body undergoing planar motion. The absolute tangential accelerations of the points R and S on the body are 150 mm/
and 300 mm/
respectively in the directions shown. What is the angular acceleration of the rigid body?
and 300 mm/ respectively in the directions shown. What is the angular acceleration of the rigid body? Question 6
Consider the following follower motion with respect to a given lift, speed of rotation and angle of stroke of a cam:
1) Cycloidal motion
2) Simple harmonic motion
3) Uniform velocity motion
Which one of the following is the correct sequence of the above in the descending order of maximum velocity?
1) Cycloidal motion
2) Simple harmonic motion
3) Uniform velocity motion
Which one of the following is the correct sequence of the above in the descending order of maximum velocity?
Question 7
The displacement of a follower of a cam in a printing machine is represented by the expression
Where
is the angle of rotation of the cam. The jerk given by the system at any position is
Where
is the angle of rotation of the cam. The jerk given by the system at any position is Question 8
Statement (I) : In case of partial balancing of locomotives, the maximum magnitude of the unbalanced force perpendicular to the line of stroke is called hammer blow and this has to be limited by proper choice of the balancing mass and its radial position.
Statement (II): The effect of hammer blow is to cause variation in pressure between the wheel and the rail, and it may sometimes cause the lifting of wheels from the rails.
Statement (II): The effect of hammer blow is to cause variation in pressure between the wheel and the rail, and it may sometimes cause the lifting of wheels from the rails.
Question 9
What will be the inertia of the flywheel, if the engine speed varies from 175 rad/s to 125 rad/s where kinetic energy during the cycle change results as 600 Nm.
Question 10
Consider the following motions:
1) Piston reciprocating inside an engine cylinder
2) Motion of a shaft between foot-step bearings
Which of the above can rightly be considered as successfully constrained motion?
1) Piston reciprocating inside an engine cylinder
2) Motion of a shaft between foot-step bearings
Which of the above can rightly be considered as successfully constrained motion?
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Jul 16ESE & GATE ME
