Galvanised Iron sheets have a coating of

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Galvanised Iron sheets have a coating of

ATin

BLead

CZinc

DChromium

Akilesh Kharvi ? Jun 14 '2017 at 21:32

Answer is Zinc

Explanation:

Galvanization (or galvanizing as it is most commonly called in that industry) is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which parts are submerged in a bath of molten zinc.

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The dynomo is a device for converting

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The dynomo is a device for converting

AHeat energy into electrical energy

BMechanical energy into electrical eneregy

CMagnetic energy into electrical energy

Dnone of these

Akilesh Kharvi ? Jun 14 '2017 at 21:23

Anwer is Mechanical energy into electrical eneregy

Explanation:

A dynamo is an electrical generator that produces direct current with the use of a commutator. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current alternator, and the rotary converter. 

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Electric current is measured by

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Electric current is measured by

AVoltmeter

BAnemopmeter

CCommutator

DAmmeter

Akilesh Kharvi ? Jun 14 '2017 at 21:17

Answer is Ammeter

Explanation:

Electric current is measured by Ammeter. The unit for the same is Ampere.

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Which of the following uses non-conventional Source of Energy?

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Which of the following uses non-conventional Source of Energy?

ATorch

B Solar lantern

CWax candle

D Kerosene lamp

Akilesh Kharvi ? Jun 13 '2017 at 20:45

Answer is ;  Solar lantern

Explanation:

Conventional energy directly mean the energy source which is fixed in nature like oil, gas and coal. In other words conventional energy is also termed as non-renewableenergy sources. Their use leads to increased greenhouse gas emissions and other environmental damage.Jan 5, 2016

Non Conventional Energy sources: Those energysources which are renewable and ecologically safe.  Following are the different non conventional energies:  Tidal energy  Wind energy  Hydro energy  Biomass  Geothermal energy  Solar energy

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The gas predominantly responsible for global warming is

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The gas predominantly responsible for global warming is

ACarbon dioxide

B Carbon monoxide

CNitrous oxide

DNitrogen peroxide

Akilesh Kharvi ? Jun 13 '2017 at 20:12

Anwer is Carbon dioxide

Explanation:

Carbon dioxide (Co2) is predominantly responsible for Global warming. 72% of the totally emitted greenhouse gases is carbon dioxide.

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Which from the following rivers does not originate in Indian territory?

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Which from the following rivers does not originate in Indian territory?

A Chenab

B Brahmaputra

C Ravi

D Mahanadi

Akilesh Kharvi ? Jun 11 '2017 at 21:47

Answer is Brahmaputra

 

Explanation:

Brahmaputra river originates from Tibbet as per wikipedia. 

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The speed of light with the rise in the temperature of the medium.....

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The speed of light with the rise in the temperature of the medium.....

ARemains unaltered

BDecreases

CIncreases

DDrops sharply

rajesh ? Jun 11 '2017 at 20:32

Answer is  Increases

Explanation:

The speed of light remains unaltered with the changes in temperature and it is \(3 \times 10^8\)m/sec in vacuum. Howerer, the speed of light differs in different mediums (different refractive indices) as follows:

\(\lambda =\frac{c} { \nu}\)

Where C = speed of light in vacuum and \( \nu\) is refractive index of medium 

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