Q. A beam which is fixed at one end and free at the other is called
- simple supported beam
- fixed beam
- overhanging beam
- cantilever beam
Answer: cantilever beam
Q. When the spring of a watch is wound, it will possess
- strain energy
- kinetic energy
- heat energy
- electrical energy
Answer: strain energy
Q. One watt is equal to
- 0.1 Joule/sec
- 1 Joule/sec
- 10 Joule/sec
- 100 Joule/sec
Answer: 1 Joule/sec
Q. The point though which the whole weight of the body acts irrespective of its position is known as
- moment of inertia
- center of gravity
- center of percussion
- none of these
Answer: center of gravity
Q. A machine having an efficiency less than 50 % is known as
- reversible machine
- non-reversible machine
- either reversible machine or non-reversible machine
- Ideal machine
Answer: non-reversible machine
Q. Radiation can be detected by
- ammeter
- voltmeter
- electrometer
- oscillator
Answer: electrometer
Q. The energy is emitted from a body in tiny packets and not as continuous stream. This statement is based on
- Planks quantum theory
- Bohrs theory
- Balmer theory
- Photo electric field effect
Answer: Planks quantum theory
Q. As open fuse has a resistance of
- zero
- infinity
- about 100 ohms at room temperature
- at least 1000 ohms
Answer: infinity
Q. Electrical resistance and heating elements are made from
- brass
- copper
- nichrome
- gun metal
Answer: nichrome
Q. Open circuit test on transformers is conducted to measure
- core loss
- friction loss
- copper loss
- none of these
Answer: core loss
