List of top Mechanical Engineering Questions asked in CUET (PG)

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In a multispindle CNC machine tool 3 operations are performed with times 50 70 and 80 seconds at each of its work centers The cycle time time required to manufacture one workpiece in seconds will be

A ratchet screw in a micrometer is provided to

For clearance fit the upper limit of the shaft should be

Production scheduling is simple and high volume of output and high labour efficiency are achieved in the following case of

Centre-line feeding resistance CFR indicates the difficulty of feeding a given alloy in a mould Normally feeding is considered to be difficult if

Tempering is a heat treatment process by which

Under ideal conditions in drawing operation maximum possible reduction of area in one pass is:

In a plane stress system, two principal stresses are 785 N/mm² and 115 N/mm². If the system just causes yielding, what is the uni-axial yield stress of the material according to the Von Mises criterion:

Consider the following statements
(A) For the two shafts connected in parallel, the angle of twist of each shaft is same.
(B) For the two shafts connected in series, the shear stress in each shaft is same.
(C) The shear stress in a circular shaft under torsion varies linearly.
(D) The shear stress at the centre of a circular shaft under torsion is zero.
Choose the correct answer from the options given below:

Consider the following statements A Frictional force is dependent of area of contact B Frictional force acts in tangential direction to the surface in contact C Maximum value of static friction is known as limiting friction D Dynamic friction is also known as kinetic friction

Forces whose line of action passes through a common point are known as

Consider the following statements about shear stresses in beams A The shear stress at neutral axis of a rectangular section is the maximum stress B The shear stress variation across a rectangular section is parabolic C The shear deformations are small as compared to bending deformation D The shear centre is also known as centre of moment

A ball is thrown vertically upward with velocity 5 m/sec It takes 10 sec for its upward journey The time taken by the ball for its downward journey is

The coefficient of restitution of a perfectly plastic impact is equal to:

Three identical gears A B and C are used in power transmission. Gear A and C are input and output gears Gear B is an idler gear connecting A and C. The gear which is subjected to reversed nature of stress is

A specimen is subjected to a stress which follows sinusoidal variation with respect to the time from minimum zero value to a maximum value \(+\sigma\):

1. Mean value of Stress = 0
2. Amplitude of Stress = \( \sigma / 2 \)
3. Nature of Stress = Repeated Stress
4. Nature of Stress = Fluctuating Stress

Choose the correct answer from the options given below:

A shaft is subjected to Bending Moment (\( M \)) and Torsional Moment (\( T \)), the equivalent torsional moment in the shaft is:

The type of brake in which frictional force assists in applying the brakes is termed as

The undamped natural frequency of system is 80 rad/sec. A damper is provided in the system having damping factor 0.7. The damped natural frequency of the system in rad/sec will be:

A solid disc of mass \( m \), radius \( r \) is resting on a horizontal smooth surface. A spring of stiffness \( k \) is connected to the disc at distance \( e \) directly above the centre of the disc. Another end of the spring is connected to the vertical wall. For small angular displacement of the disc, the natural frequency of the system in radians per second will be:

An aeroplane is making a left turn as viewed by an observer from the rear of the plane The engine rotor of the plane are running in clockwise sense when viewed from the rear side The gyroscopic effects tend to

Given below are two statements:
Statement (I): Flywheels are used to control the fluctuations in speed of machines arising from external sources.
Statement (II): Governors are used to control the fluctuations in speed of machines arising from internal sources.
In light of the above statements, choose the most appropriate answer from the options given below.