List of top Questions asked in AP PGECET- 2026

A thin cylindrical shell of diameter 'd', length 'l' and thickness 't' is subjected to an axial or internal pressure 'P'. What is the ratio of longitudinal strain to hoop strain in terms of Poisson's ratio (1/m)

The shape factor in radiative heat transfer depends on:

A mould has a down sprue whose length is 20 cm and the cross-sectional area at the base of the down sprue is 1 cm\(^2\). The down sprue feeds a horizontal runner leading into the mould cavity of volume 1000 cm\(^3\). The time required to fill the mould cavity will be

During an adiabatic process in an ideal gas, which of the following is true?

In bulk metal forming, the load required for forging depends primarily on:

Which type of bearing is best suited for high-speed applications with moderate radial loads?

The thermal stress in terms of modules of elasticity(E), co-efficient of thermal expansion(\(\alpha\)), Temperature(T) is given by

A viscous damping system with free vibrations is said to be critically damped if the damping factor is

Which of the following is NOT a primary mechanism of material removal in Electrical Discharge Machining (EDM)

Consider a large cubic ice block floating in water with top surface of the ice block parallel to the surface of the sea. The specific gravities of ice and seawater are 0.9 and 1.0, respectively. If a 20-cm-high portion of the ice block extends above the surface of the water, determine the height of the ice block below the surface.

In Mohr's circle for plane stress, what do the points on the circle represent?

A liquid of specific gravity 1.0 flows in a pipe at a rate of 900 lit/s, from point 1 to point 2 which is 1 m above point 1. The areas at section 1 and 2 are 0.6 m\(^2\) and 0.3 m\(^2\) respectively. If the pressure at section 1 is 20 kPa, determine the pressure at section 2. (Assume g = 10 m/s\(^2\))

In turbulent flow through a pipe, the Reynolds number is typically:

In the case of bi-axial state of normal stresses, the normal stress on 45\(^\circ\) plane is equal to ________.

Computer Integrated Manufacturing (CIM) primarily refers to

The device used to demonstrate laminar and turbulent flow in pipes is:

Which of the following is a key assumption in linear programming?

The number of atoms per unit cell and the number of slip system, respectively, for a face-centered cubic (FCC) crystal are

For an air-standard Otto cycle, the compression ratio is 8 and the ratio of specific heats (\(\gamma\)) is 1.4. The air-standard efficiency of the cycle is _______.

A closed system undergoes a process in which it interacts with the surroundings maintained at \(T_{0} = 300\text{ K}\) and \(P_{0} = 100\text{ kPa}\). During the process:
\(\bullet\) The system receives 1000 kJ of heat from a reservoir at 1200 K.
\(\bullet\) The system does 500 kJ of boundary work on the surroundings.
\(\bullet\) There is no change in kinetic or potential energy, and the process ends at the dead state (equilibrium with surroundings).
Which of the following statements is most correct?

In a counter flow heat exchanger, hot fluid enters at \(120^\circ\text{C}\) and leaves at \(80^\circ\text{C}\). Cold fluid enters at \(20^\circ\text{C}\) and leaves at \(60^\circ\text{C}\). Find the log mean temperature difference (LMTD).

What is the main difference between annealing and tempering?

Which comparator type uses a dial indicator to measure deviations from a standard?

In the entrance region of a pipe, the boundary layer grows and the inviscid core accelerates. This is accompanied by the fluid's pressure drop per unit length is

Air enters an adiabatic nozzle at 300 kPa and 500 K with a velocity of 10 m/s. It leaves the nozzle at 100 kPa with a velocity of 180 m/s. The specific heat of air \(C_{\text{p}} = 1008\text{ J/kg}\cdot\text{K}\). The exit temperature of air is