RRB Junior Engineer (JE) Sample Paper: General Awareness (General Science)-17

1. An artificial earth satellite is said to be in a geo-stationary orbit when :

(a) it is so placed that it does not move.
(b) it remains stationary in relation to some point on the earth.
(c) its course is governed by terrestrial gravity.
(d) it is made to stay in one place in obedience to commands from a space centre on the earth.

2. A car and a lorry both are moving with equal kinetic energies. If equal breaking force is applied on both, then before coming to rest :

(a) a car will cover a greater distance
(b) lorry will cover a greater distance
(c) both will cover the same distance
(d) the distance covered by them will depend only on their respective velocities.

3. Choose the most appropriate statement for a particle body :

(a) particle is a point size body.
(b) particle body has no dimensions.
(c) two bodies are considered as particles it the distance between them is very large compared with their dimensions.
(d) in translatory\ motion, any body of finite size may be considered as particle.

4. Identify the correct definition of acceleration due to gravity :

(a) It is defined as the force experienced by a unit mass
(b) It is defined as the acceleration of a free falling body.
(c) Both (a) and (b)
(d) None of these

5. When a man cycles round the earth in a satellite, than his

(a) mass becomes zero but weight remains constant
(b) mass remains constant but weight becomes zero.
(c) both mass and weight remain constant.
(d) both mass and weight become zero.

Study Kit for RRB Junior Engineer EXAM (Phase-1)

1(b), 2(c), 3(d), 4(b), 5(c)