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GATE 2020 : Theory of Machines Rapid Quiz 1 (App update required to attempt this test)
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Question 1
Mobility of given mechanism is
Question 2
A locomotive is running in a smooth road with sufficient friction for no slip of the tire. The variation of the unbalanced force causes a tractive force. At what angle in degree along the line of action of stroke does the tractive force is maximum. (input a value not greater than 180 degree)…
Question 3
For a vertical cylinder, The diameter of the piston is 60 mm and the mass of the reciprocating parts is 1.3 kg. At a point during the power stroke when the piston has moved from the top dead centre, the force due to gas pressure on the piston is 3 kN. If the acceleration force is 2 kN acting upward and take β = 10 °, find the thrust in the connecting rod. ______.
Question 4
For a machine, the turning moment Vs crank angle graph for a cycle is shown below. If the power of the motor is 4.614 kW, the mean speed of the motor is ____ rpm.
Question 5
For a gear pair arrangement having stub teeth profile and pressure angle of 20 ° interference can be avoided if the gear having atleast a minimum number of teeth arrangement. Find the minimum number of teeth for such a gear pair to avoid interference.
Question 6
In a whit worth quick return motion mechanism, the distance between the fixed centers is 50 mm and the length of the driving crank is 75 mm. The length of slotted lever is 150 mm and length of the connecting rod is 135 mm. The ratio of the time of cutting stroke to the time of return stroke is ____.
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