List of top Questions asked in AP PGECET

The Third Law of thermodynamics states that entropy at absolute zero is:

The packing sequence of atoms in FCC is

Which has highest magnetic susceptibility?

A solid circular shaft is subjected to bending moment and torsional moment. What is the nature of maximum principal stress at the outer surface?

Ceramic materials are generally:

Curie temperature is the temperature at which:

The core of optical Fiber has refractive index:

Retentivity means:

For Inlet diameter $>$ Outlet diameter the Velocity and pressure along the flow will be as

For a laminar boundary layer developing over a flat plate, the displacement thickness is defined as: $\delta^* = \int_0^\delta \left(1 - \frac{u}{\text{U}_\infty}\right) dy$. Physically, $\delta^*$ represents

A major thermodynamic reason for nanoparticle agglomeration is:

At equilibrium, Gibbs free energy change is:

Paramagnetic materials have:

Which material is diamagnetic?

Magnetic susceptibility ($\chi$) of paramagnetic materials follows:

The volume $V$ of a cubic unit cell is related to the lattice parameter $a$. Which of the following expressions is dimensionally and physically correct?

Drag force $F$ depends on density $\rho$, velocity $V$, and diameter $D$: $F = k \rho^a V^b D^c$. Find exponents $a, b, c$.

Stirling's approximation is used to simplify:

The efficiency of a Carnot engine depends on:

Second law states:

Which of the following statements regarding mechanical twinning is FALSE?

At eutectic point, degree of freedom is:

Two parallel edge dislocations of the same sign (same Burger's vector) are located on the same slip plane. As they approach each other, what happens?

In statistical thermodynamics, Stirling's Approximation ($\ln N! \approx N \ln N - N$) is valid only when

Chemical potential is equal to: