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

Match List-I with List-II
List-IList-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) \( \frac{p_1 V_1 - p_2 V_2}{\gamma - 1} \)
Choose the correct answer from the options given below:
The value of the integral \( \int_C \frac{3\sigma^2 + x}{z^2 - 1} \, dz \), where \( C \) is the circle \( |z - 1| = 1 \), is
Which of the following is the most accurate method to measure the diameter of a cylindrical object?
For an insulated tip, the fin efficiency is given by
Arrange the following elements of a feedback control loop in the correct order: (A) Actuator (B) Error detection (C) Controller (D) Feedback sensor Choose the correct answer from the options given below:
Which thermodynamics law predicts correctly the degree of completion of a chemical reaction?
The strain energy stored in a body due to a suddenly applied load compared to when it is applied gradually is
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
Choose the correct answer from the options given below:
A principal plane is a plane of
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?
The polar section modulus for a circular shaft of diameter "d" is:
Bernoulli's theorem deals with the law of conservation of
According to maximum shear stress failure theory, yielding in material occurs when:
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?
If a helical spring is halved in length, its spring stiffness remains:
If \( A = \begin{bmatrix} 2 & -1 \\ -1 & 2 \end{bmatrix} \) satisfies the matrix polynomial equation \( A^2 - 4 + kI_2 = 0 \), then determine the value of \( k \).
If 'A' is the optimistic time, 'B' is the pessimistic time and 'C' is the most likely time of an activity, then the expected time of activity is:
A vertical double-acting steam engine develops 75 kW at 250 r.p.m. The maximum fluctuation of energy is 30 percent of the work done per stroke. The maximum and minimum speeds are not to vary more than 1 percent on either side of the mean speed. What is the approximate mass of the flywheel required? If the radius of gyration is 0.6 m.
V-block used in the workshop to check:
If \( y = e^{(x+e)^{(x+e)^{(x+\cdots)}}} \), what is the value of \( \frac{d}{dx}(y) \)?
An impulse turbine produces 50 kW of power when the blade mean speed is 400 m/s. What is the rate of change of momentum tangential to the rotor?
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 critical speed of a rotating shaft depends upon
The height of a Watt's governor is expressed as
In which one of the following materials the heat energy propagation is minimum due to conduction heat transfer?