Work and Energy

Work and Energy
A system which gives an output equal to the total energy used by it is called
negative system
non-ideal system
ideal system
slow system
Author: rikazzz Comment
Everyday Science
Energy can be converted into some other forms but can not be
destroyed
decrease
increase
transferred
Author: rikazzz Comment
Everyday Science
Plant or animal wastes that can be burnt as fuel is called
biomass
biochemical
magma
bimetallic
Author: rikazzz Comment
Work and Energy
A solar heating system consists of
a collector
a storage device
a distribution system
all of above
Author: rikazzz Comment
Everyday Science
Electric generators convert mechanical energy into
light energy
sound energy
electrical energy
chemical energy
Author: rikazzz Comment
Work and Energy
Which of the following converts light energy into electrical energy?
photocell
electrical generator
electric cell
electric bulb
Author: rikazzz Comment
Work and Energy
The energy released in the form of nuclear radiations in addition to heat and light during nuclear reactions is known as
chemical energy
nuclear energy
heat energy
electrical energy
Author: rikazzz Comment
Everyday Science
One horsepower is equal to
790 watts
700 watts
720 watts
746 watts
Author: rikazzz Comment
Work and Energy
The rate of doing work is called
efficiency
stress
strain
power
Author: rikazzz Comment
Work and Energy
(a required form of output/total input energy)×100 is equal to
% power
% efficiency
% stress
% strain
Author: rikazzz Comment

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