The percentage of the energy supplied to a device is called
Power
Work done
Fuels
Efficiency
A quantity which has both magnitude and direction is
Scalar quantity
Vector quantity
Fundamental quantity
Derived quantity
Which of the following is needed to enable people, computers, machines and other devices to do work ?
Energy
Energy transfer
The source of most liquid and gaseous fuels is from
Sun
Natural gas
Crude oil
Paraffin
The energy possessed by a body by virtue of its position is called
Kinetic energy
Potential energy
Chemical energy
Solar energy
Food and fuels like oil, gas, coal etc are concentrated stores of
Electrical energy
The unit of pressure is
Newton
Joule
Pascal
Hertz
A device which can turn about a point is called
Beam
Lever
Load
Effort
Pressure depends on the
Density of the liquid
Mass of the liquid
Weight of the liquid
Position of the liquid ( vertical or horizondal )
At equilibrium, there is
Greater moment
Less moment
No net moment
Can not predict