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Which of these are not the advantages of hydel power generation?

Pollution is rarely created. Reduces greenhouse emissions. Relatively low maintenance costs. It is renewable.... View Article

Why are most of thermal power plants located near coal mines?

As transmission of electricity is more efficient than transporting coal or petroleum. Hence thermal power plants are set up near the coal fields.... View Article

Ampere2 ohm – is the unit of which physical quantity?

(Ampere2 ohm) = I2 R = Power... View Article

Add 3.1421 ,0.241 and 0.09 and give your answer with correct precision

3.1421 0.241 +0.09 ________ ← (least no. of decimal places) 3.4731 Answer : 3.47... View Article

Which of the following is the use of artificial satellite

Artificial satellite, which is launched from earth's surface, has to meet some specific purposes, which are weather forecasting, remote... View Article

Explain two phenomena that shows movement of wind is caused due to unequal heating on earth?

Land breeze and sea breeze are two natural phenomena which shows that movement of air occurs due to uneven heating on earth. Sea breeze: In... View Article

What would be the impact on friction if powder is sprinkled on the carom board?

Sprinkling of powder makes the surface of the board smoother than before due to comparatively less inter-locking between irregularities of the... View Article

Statement 1: Pluto is no longer a planet of the solar system. Statement 2: Till 2006, Pluto was a planet and it was known to be the farthest from sun, but after the new definition of planet by International Astronomical Union (IAU), it was no longer found to fit this definition.

Answer: Earlier before the new definition of planet set by the International Astronomical Union (IAU) in 2006, Pluto was considered to be the... View Article

The two windings of a transformer is (1) Conductively linked (2) Inductively linked (3) Not linked at all (4) Electrically linked

Answer: (2) Inductively linked A transformer is a device used in the power transmission of electric energy. The transmission current is AC. It... View Article

Statement 1: Mercury, Venus, Earth and mars are much nearer to Sun and are known as inner planets and they have less number of moons. Statement 2: Jupiter, Saturn, Uranus and Neptune are known as outer planets because of their large distances from the Sun. They have a large number of satellites and all have a ring system around them.

The planets like mercury, Venus, earth and mars are nearer to Sun and are known as inner planets, they don't have ring system and have less... View Article

In the adjoining ac circuit the voltmeter whose reading will be zero at resonance is

At resonance net voltage across L and C is zero. ... View Article

Artificial satellites revolve in orbits, which are

Artificial satellites are manmade and are launched from earth's surface in order to meet a specific purpose, which may be weather forecasting,... View Article

What prerequisites are necessary in identifying a constellation in the sky?

Prerequisites necessary in identifying a constellation in the sky are : 1. how a particular constellation looks like 2. where to look for it in... View Article

Those large celestial bodies, which can reach earth before evaporating completely are known as

Meteorites are large meteors, which reach the earth before evaporating completely. Meteorites have comparatively larger size than meteors.... View Article

Why doesn’t the north star appear to move like the other stars?

The pole star,is situated in the direction of the earth’s axis so it does not appear to move.... View Article

Define light year.

Light year is the distance travelled by light in one year. Speed of light is = 3×108 m/s Time = 365 days S=d/t d =... View Article

How many moons does Mars have?

By numbers of moons of a planet we mean that how many natural satellites does it have. Mars has two naturally occurring satellites and therefore... View Article

Considering a hypothetical situation where Ram, while going to mars promises Shyam to return after completion of one year. Shyam was on earth and was waiting for Ram to return, but after 365 days he didn’t come. He came after 687 days from mars. Why?

Since Mars is a greater distance from Sun than earth, therefore it has a bigger orbit and takes 678 days to complete one full revolution around sun. ... View Article

Average power is defined as?

Answer: Average power is defined as the ratio of total work done by the body to the total time taken by the body. The unit of... View Article

Two very thin metallicwires placed along X and Y-axis carry equal currents as shown here. AB and CD are lines at 450 with the axes with origin of axes at O. The magnetic field will be zero on the line [MP PMT

Every point on line AB will be equidistant from X and Y-axis. So magnetic field at every point on line AB due to wire 1 along X-axis is equal in... View Article

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