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SSC JE 2019 - 20 Theory of Machine 2
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Question 1
When a slider moves with a velocity v on a link rotating at an angular speed of ω, the Coriolis component of acceleration is given by
Question 2
Which of the following term defines the size of the cam?
Question 3
The instantaneous center of rotation of a rigid thin disc rolling on a plane rigid surface is located at
Question 4
The mass of flywheel of a steam engine is 3250 kg with the radius of gyration of 1 m. The starting torque of the engine is 4500 N-m. What is the angular acceleration (rad/s2) of the flywheel?
Question 5
In steady state forced vibrations, the amplitude of vibrations at resonance is _____________ damping coefficient.
Question 6
Which one of the following mechanisms represents an inversion of the single slider crank chain?
Question 7
Which ratio defines the height of a porter governor to that of the watt governor for equal arm and link lengths, where m is the mass of the ball and M is the mass of the sleeve?
Question 8
Which of the following is CORRECT for the speed ratio of a gear train?
Question 9
Which of the following is used for controlling fluctuations in an engine?
Question 10
A bike is moving on a curved flat road of radius 200 m with a speed of 25 m/s. The combined moment of inertia of the rotating masses is 16 kg-m2. Consider rotating masses of the engine have an angular speed of 50 rad/s in clockwise direction when viewed from the front of the bike. Find the magnitude of the gyroscopic moment ________.
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