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WorksheetsSustainable Future, Energy, Power
Total questions: 20
Worksheet time: 10mins
The resistance of a few metres of wire conductor in closed electrical circuit is
Practical zero
Low
Very high
high
Ohm's law is not applicable to
Carbon resistors
Circuit with low current densities
Vacuum tubes
High voltage circuits
A closed switch has a resistance of
Zero
About 50 ohms
About 500 ohms
Infinity
What resistors type is found in SIPs and DIPs?
Metal oxide
Thick Film
Metal film
Wire wound
The six basic form of energy are
Electrical, mechanical, light, heat, magnetic and chemical
Potential, sun, light,chemical, electrical and mechanical
Electrical, mechanical, sun, heat chemical and hight
Light, sun, magnetic, chemical, electrical and mechanical
Power is defined as
Watts
Energy
The rate of which energy is used
The rate at which energy is generated
Power is measured in units of
Joules*voltage
Joules*charge
Joules/work
Joules/time
What quantities do you need to calculate energy
Current and voltage
Power and time
Resistance and current
Power and voltage
What is the electrical energy of a 70w TV that is used for 110hr
7.7kwh
0.63kwh
7700kwh
1.57kwB
Large capacity generator are invariably
Water cooled
Natural air cooled
Forced air cooled
Hydrogen cooled
Uranium atom in a nuclear power plant
Combine with each other to release energy
Split to release energy
Are burned to release energy
Release electron as usable electricity
The biggest use of energy in typical US home is
Home electronics
Water heating
Space heating
Cooking
In which year the'sustainable development' came into existence
1987
1980
1978
1992
The 'Agenda 21' of Rio summit 1992 is related to
Sustainable development
Polluters-pays principles
Environmental education
Preservation of ozone layers
which house hold waste has an excellent recycling potential
Metal
Plastic
Rubber
Vegetable scrap
The first airport powered by solar energy was
Bangalore
London
Cochin
Frankfurt
One of the conventional source of energy is
Wind energy
Tidal energy
Hydroelectric energy
None of the above
which plant is cultivated for biodiesel?
Soya bean
Jatropha
Sunflowers
Groundnut
A half-watt is equal to how many milliwatts
5,000mw
5mw
500mw
50mw
Bulbs in street lighting are all connected in
Parallel
Series
End-to-end
Series-parallel
