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

Match List-I with List-II

List-I (Dimensionless Numbers)	List-II (Relationship)
(A) Froude's Number	(II) \( \sqrt{\frac{\text{Inertia force}}{\text{Gravity force}}} \)
(B) Mach's Number	(IV) \( \sqrt{\frac{\text{Inertia force}}{\text{Elastic Force}}} \)
(C) Euler's Number	(I) \( \frac{\text{Pressure Force}}{\text{Inertia Force}} \)
(D) Weber's Number	(III) \( \frac{\text{Inertia Force}}{\text{Surface Tension Force}} \)

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Which thermodynamics law predicts correctly the degree of completion of a chemical reaction?

Bernoulli's theorem deals with the law of conservation of

In a psychrometric chart, what does a vertical downward line represent?

The strain energy stored in a body due to a suddenly applied load compared to when it is applied gradually is

Using the method of Regula Falsi, a root of the equation \( x^3 + x^2 - 3x - 3 = 0 \) lying between 1 and 2 is

For an insulated tip, the fin efficiency is given by

A Newtonian fluid is defined as the fluid which

After expansion from a gas turbine, the hot exhaust gases are used to heat the compressed air from a compressor with the help of a cross-flow compact heat exchanger of 0.8 effectiveness. What is the number of transfer units of the heat exchanger?

At a point on the beam where shear force changes signs, the bending moment at that point is

Gas contained in a closed system consisting of a piston-cylinder arrangement is expanded. Work done by the gas during expansion is 50 kJ. The decrease in internal energy of the gas during expansion is 30 kJ. The heat transfer during the process is equal to:

A refrigerating machine working on a reversed Carnot cycle takes out 2 kW of heat from the system while working between temperature limits of 300K and 200K. The coefficient of performance and power consumed by the cycle will be respectively:

The Nusselt number is related to the Reynolds number in laminar and turbulent flows respectively as:

Match List-I with List-II

List-I (Details of the processes of the cycle)	List-II (Name of the cycle)
(A) Two adiabatic, one isobaric and two isochoric	(I) Diesel
(B) Two adiabatic and two isochoric	(II) Carnot
(C) Two adiabatic, one isobaric and one isochoric	(III) Dual
(D) Two adiabatics and two isothermals	(IV) Otto

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The following conditions must be satisfied for a perfect truss (m = number of members, j = number of joints):

An aeroplane is flying at a height of 15 km, where the temperature is -50°C. Assuming \( k = 1.4 \) and \( R = 287 \, \text{J/K . kg} \), the approximate speed of the plane corresponding to \( M = 2.0 \) will be?

The thickness of a laminar boundary layer at a distance \( x \) from the leading edge over a flat plate varies as

The latent heat of vaporization at the critical point is

The polar section modulus for a circular shaft of diameter "d" is:

Match List-I with List-II

List-I	List-II
(A) Work done in a polytropic process	(IV) \( \frac{p_1 V_1 - p_2 V_2}{n - 1} \)
(B) Work done in a steady flow process	(I) \( - \int v \, dp \)
(C) Heat transfer in a reversible adiabatic process	(II) Zero
(D) Work done in an isentropic process	(III) \( \frac{p_1 V_1 - p_2 V_2}{\gamma - 1} \)

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A principal plane is a plane of

Match List-I with List-II

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According to maximum shear stress failure theory, yielding in material occurs when:

All the failure theories give nearly the same results when

In which one of the following materials the heat energy propagation is minimum due to conduction heat transfer?