| 1 |
The artificial satellites are held in orbits by |
- A. Gravitational force
- B. Electric force
- C. Magnetic force
- D. All of these
|
| 2 |
In rotational motion the analogous of mass is |
- A. Angular acceleration
- B. Torque
- C. Moment of inertia
- D. Angular momentum
|
| 3 |
The direction of angular velocity is determined. |
- A. Left hands rule
- B. Head to tail rule
- C. Right hand rule
- D. General rule
|
| 4 |
The SI unit of angular momentum is |
- A. J.S-2
- B. J.S-1
- C. J.S
- D. J.m
|
| 5 |
Which is unimportant in describing the satellites orbit. |
- A. Distance of satellite from earth's center
- B. Gravitational constant G
- C. Mass of satellite
- D. Mass of earth
|
| 6 |
The time rate of change of angular displacements called. |
- A. Linear velocity
- B. Linear speed
- C. Angular velocity
- D. Angular speed
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| 7 |
INTELSAT VI satellite operates at microwave frequencies of. |
- A. 2,4,6,10 GHz
- B. 4,6,11 and 14 MHz
- C. 4,6,11 and 14 GHz
- D. 2,4,6 AND 14 GHz
|
| 8 |
The minimum number of correctly positioned communication satellites to cover whole populated earth is. |
|
| 9 |
Direction of angular acceleration is always along |
- A. x-axis
- B. y -axis
- C. z-axis
- D. The axis of rotation
|
| 10 |
The diver spin faster when moment of inertia becomes. |
- A. smaller
- B. Greater
- C. Constant
- D. Equal
|