List of top Physics Questions

The phase space is a

Match List I with List II

LIST I (Oscillator and Amplifier)		LIST II (Characteristics)
A	Wien-bridge oscillator	I	Low output impedance
B	Voltage-shunt feedback amplifier	II	RF frequency range
C	Crystal Oscillator	III	Audio frequency range
D	Current-shunt feedback amplifier	IV	High output impedance

Choose the correct answer from the options given below:

What is the relation between Boyle temperature (T_B) and critical temperature (T_c) of a gas?

In Fermi-Dirac statistics, the particles are

A solenoid of length 30 cm is wound uniformly with 3000 turns of wire. The wire carries a current of 10 A. What is the value of B on the axis within the solenoid? [μ₀=4лx10^-7 T m/A]

The COP of a heat pump is 40% of a reversible heat pump. The operating temperatures limits are \(2°C\) and \(25°C\). If 2.5 kW of heat is pumped by the heat pump in a room to be heated, then the power input to the heat pump is:

The time period of oscillation of the charge in a circuit containing inductance (L) and capacitance (C) only is

The frequency stability of the oscillator output is maximum in___

The self-inductance of a solenoid is

What is the relation between half life (T) and decay constant (\(λ\)) of a radioactive element?

What happens if the electron spin is 3/2 instead of 1⁄2?

A combinational logic circuit has three inputs A, B and C and one output Y. The output Y=1. when at least two inputs are 1. otherwise. Y=0. In its minimised SOP realization, the maximum number of two-input terms is:

When the speed becomes more than the synchronous speed during hunting, the damper bars develop___

If Thevenin's equivalent resistance of the given circuit seen from the open terminals is 2Ω. then the value of 'R' will be___

In the figure shown, where H= High input, L = Low Input

This multiplex is equivalent to ____

In an actual regenerative Rankine cycle, the net work out put will be _____ as compared to simple Ranking cycle.

Given below are two statements :
Statements-I : Important characteristic of electromagnetic wave is that it can transport energy from one point to another point.
Statements-II : The direction of electromagnetic wave at a given point is the direction in which energy is being transmitted.
In the light of the above statements, choose the correct answer from the options given below.

If magnetic monopole existed, then which of the following Maxwell's equations will be modified?

A voltage of 100 V dc is applied across two capacitors in series having capacitances C1 = 200 μF and C2 = 20 uF. A voltage drop across C1 is given as

For a fixed voltage, the current flowing through a conductor will increase when it's____

Match List I with List II

LIST I (Type of Test)		LIST II Quantities to be measured)
A	Open circuit test	I	Copper loss and iron loss
B	Short circuit test	II	Total losses
C	Sumpner's test	III	Iron test
D	Load test	IV	Copper losses

Choose the correct answer from the options given below:

Operational amplifiers can be used as
A. Summing circuit
B. Voltage regulator
C. Integrator
D. Differentiator
E. Clipping Circuit
Choose the correct answer from the options given below.

Match List I with List II

Choose the correct answer from the options given below:

Charge amplifier is used to amphfy the output signal of
(A) Piezoelectric Transducer
(B) Photo emissive Transducer
(C) Photo conductive Transducer
(D) Photo Voltaic Transducer
(E) LVDT
Choose the correct answer from the options given below:

From the evaporator of a vapour compression refrigerator the refrigerant leaves at 205 KJ/kg and leaves condensor at 75 KJ/kg. The cooling load in kW for supply of refrigerant per kg per second is: