List of top Mechanical Engineering Questions asked in TS PGECET

The critical speed of the shaft is affected by the
A flywheel is designed for engine speed variation from $190\text{ rps}$ to $210\text{ rps}$. Calculate the inertia of the wheel if the kinetic energy stored in the flywheel is $400\text{ N}\cdot\text{m}$.
The minimum number of teeth on the pinion in order to avoid interference for $20^\circ$ full depth involute system is
In a given mechanism, the number of links are five. Then the number of instantaneous centres of the mechanism is
For the better dynamic performance of cam follower mechanism, the following displacement diagrams should be chosen
Assume that the connecting rod and the crank of an engine forms as two sides of the triangle. If the area included in the triangle is maximum when the crank is at $60^\circ$, then the ratio of length of connecting rod to the radius of the crank is
Two bars A and B made of different material have same length. The coefficient of expansion and Young's modulus of bar B is twice that of bar A. If the temperature of both bars is increased by the same amount while preventing any expansion, then the ratio of stress developed in bar A to that in bar B is
In general, a sudden jump in the bending moment diagram is due to the following type of loading condition?
A circular shaft has been designed for the twisting moment of $5\text{ kN}\cdot\text{m}$. If the twisting moment is reduced to $4\text{ kN}\cdot\text{m}$, then what will be the maximum value of bending moment that can be applied for the same designed condition?
A long steel column of uniform cross section is subjected to a crippling load of $10\text{ kN}$ as per the Euler designed condition. If the length of the column is reduced to half, then what would be the maximum Euler's crippling load?
Which planes carry maximum normal stress and what is shear stress on these planes
The relation of three elastic constants of a metal in terms of Young's Modulus (E), Modulus of rigidity (G) and Bulk Modulus (K) is expressed as
If a particle has the initial velocity of \( v_0 = 12\text{ m/s} \) to the right at \( S_0 = 0 \). Then what is the position when \( t = 10\text{ s} \) and \( a = 2\text{ m/s}^2 \) to the left?
A tapering bar varying from the diameters from ‘d\(_1\)' to ‘d\(_2\)' and a bar of uniform cross section ‘d' have the same length and subjected to same axial pull attains the same extension. Then the ‘d' is equal to
Based on the limiting factor to prevent bursting in thin cylinder, the design is primarily made based on which stress
The simple truss structure is shown below. The forces acting in the members AB and BC respectively are
The range of projectile is maximum when the angle of projection is
Two equal forces each of magnitude P acting at a point with an angle of \( (\alpha) \), then the resultant force is
Three coplanar equilibrium forces \( P = 40\text{ N} \), \( Q = x\text{ N} \) and \( R = y\text{ N} \) are acting on a body and the body is said to be in equilibrium when the angle included between each other is \( 120^\circ \), then \( x = \)
If the double threaded square screw is having mean diameter \( 8\text{ cm} \) and pitch \( 2\text{ cm} \), then the lead of the double threaded square screw is
The critical speed of the shaft is affected by the
A governor is said to be stable, if the radius of rotation of balls
For the better dynamic performance of cam follower mechanism, the following displacement diagrams should be chosen
Which of the following statements are associated with the complete dynamic balancing of rotating systems?
I. Resultant couple due to all inertia forces is zero
II. Support reactions due to forces are zero but not due to couples
III. The system is automatically statically balanced
IV. Centre of masses of the system lies on the axis of rotation
In general, a sudden jump in the bending moment diagram is due to the following type of loading condition?