Modern Physics

If D is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is_____.

In an interconnected power system, the most suitable power plant to meet the peak load condition is _____.

How many classes of insulating materials are there?

Materials having a high dielectric constant, which is non-linear, are known as

_____has the unit of electron volt.

The half-lives of two radioactive nuclides A and B are $1$ and $2 \min$ respectively. Equal weights of A and B are taken separately and allowed to disintegrate for $4 \min$. What will be the ratio of weights of A and B disintegrated?

What is the value of skin depth as $100 \mathrm{Hz}$ in a material having $\mathrm{\mu r} = 1.0$ and and $\mathrm{\sigma }= 3.60 \times 107 \mathrm{s}/\mathrm{m}$

Which of the following rotor is used in thermal plants?

Match the following -
Radioisotopes Uses
a. Iodine-123 :1. Leukemia
b. Cobalt -60 : 2. To trace the flow of blood
c. Sodium -24 :3. Brain imaging
d. Phosphorus-32 : 4. Treatment of Cancer

Which of the following power stations is mainly used to cover peak load on the system?

Which of the following pairs is correctly matched ?

Principal stresses at a point in a stressed solid are 400 Mpa and 300 Mpa respectively, The normal stresses on planes inclined at 45⁰to the principal planes will be

The water from a catchment is$60*106$cu m annually and hydro station has head of $40 m.$ Assuming ideal generator and turbine, the power that can be theoretically generated is _____.

In ferromagnetic materials

If Beryllium is represented as ,₅Be⁹ ,then the number of neutrons are equal to _____ ?

The Matthiessen's rule is about

What is the value of skin depth as $100 \mathrm{Hz}$ in a material having $\mathrm{\mu r} = 1.0$ and and $\mathrm{\sigma }= 3.60 \times 107 \mathrm{s}/\mathrm{m}$

The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about $0.35$( a low value), mainly because of _____.

The advantage of hydro electric power station over thermal power station is _____.

In the blackbody radiation spectrum, the maximum intensity shifts towards