modern and space physics, sources of energy - Category wise Question and Answer Practice Test with Solutions

Question : 6

Space wave propagation is:

1. tropospherical propagation
2. sky wave propagation
3. line of sight propagation

a) 1 and 3

b) 2 only

c) 1 only

d) 2, 3 and 4

Question : 7 [CDS]

Which of the following cannot be fabricated on an IC?

a) Inductors and transformers

b) Diodes

c) Transistors

d) Resistors

Question : 8 [CDS]

The transistor are usually made of

a) metals with high temperature coefficient of resistivity

b) metals with low temperature coefficient of resistivity

c) metal oxides with high temperature coefficient of resistivity

d) semiconducting materials having low temperature coefficient of resistivity

Question : 9

The waves used in telecommunication are

a) UV

b) Microwave

c) IR

d) Cosmic rays

Question : 10 [IAS Prelim]

Consider the following statements: At the present level of technology available in India, solar energy can be conveniently used to :

1. Supply hot water to residential buildings.
2. Supply water for minor irrigation projects.
3. Provide street lighting.
4. Electrify a cluster of villages and small towns.

a) 2 and 4 are correct

b) 1 and 3 are correct

c) 1, 2, 3 and 4 are correct

d) 1, 2 and 3 are correct