Minimum number of communication satellites required to cover the whole earth is______________?

Related Mcqs:

1. Minimum current required to produce a deflection of 1 mm on a scale at a distance of 1 meter is__________________?

   A. 0.1 A
   B. 1:00 AM
   C. current sensitivity
   D. 1 m A

2. What is the minimum number of unequal magnitude vectors required to get a null vector?

   A. Zero
   B. Two
   C. Three
   D. None

   Submitted by: Zahid Jagirani

3. The angular speed for daily rotation of the earth in rad S-1 is______________?

   A. 7.3 x 10 radians/second
   B. 7.3 x 5 radians/second
   C. 3.7 x 10 7.3 x 5 radians/second
   D. 7.3 x 10-5 radians/second

4. The planet nearest to the earth is______________?

   A. Venus
   B. Mercury
   C. Uranus
   D. Sun

5. Geostationary satellite completes one rotation around the earth in_______________?

   A. 3 hours
   B. 6 hours
   C. 12 hours
   D. 24 hours

6. The radius of geostationary orbit from the centre of the earth is nearly______________?

   A. 42000km
   B. 36000km
   C. 24000 km
   D. 18000 km

7. A satellite moving around the earth constitutes______________?

   A. An inertial frame of reference
   B. Non-inertial frame
   C. Neither inertial nor non-inertial
   D. Both inertial and non-inertial

8. How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit) ?

   A. 365 days
   B. 730 days
   C. 329 days
   D. 129 days

9. If a wheel of radius r turns through an angle of 30° then the distance through which any point on its rim moves is______________?

   A. π /3 x r
   B. π/6 x r
   C. V/30 x r
   D. π / 180 x r

10. The angular speed of seconds hand of a watch in rads-1 is______________?

    A. π
    B. π/2
    C. π/30
    D. π/180