Orbital radius of GPS satellites is approximately ___________________?

Related Mcqs:

1. Which one of the following statements is correct regarding the GPS satellites ?

   A. The nominal altitude is about 20,200 km
   B. The inclination of axis satellite is 55°
   C. The satellite transmits two L band signals (L1 with 1575.42 MHz and L2 with 1276.6 MHz)
   D. All of these

2. The various stages occuring in GPS system are described below ?

   1. Generation of an output to the user
   2. Detection of the GPS signals
   3. Processing the data in the built-in-computer
   4. Decoding the GPS signal

   The correct sequence of the stages is?

   A. 1, 2, 3, 4
   B. 2, 3, 4, 1
   C. 2, 4, 3, 1
   D. 3, 1, 2 , 4

3. The normal altitude of GPS satellite is about________________?

   A. 16,200 km
   B. 20,200 km
   C. 24,400 km
   D. 36,100 km

4. The code based GPS receivers are generally used for_________________?

   A. Vehicle tracking
   B. Land navigation
   C. Trans movement
   D. All of these

5. Which one of the following residual biases involves the GPS accuracy ?

   A. Satellite dependent biases due to uncertainty in the orbital parameters of the satellite
   B. Receiver -dependent biases due to clock stability with line
   C. Signal propagation biases due to the sphere and troposphere propagation
   D. All the above

6. The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is_______________?

   A. 8
   B. 12
   C. 16
   D. 24

7. In GPS, receivers used are___________________?

   A. Electronic clocks
   B. Atomic clocks
   C. Quartz clocks
   D. Mechanical clocks

8. The most widely used antenna in GPS is_______________?

   A. Parabolic antenna
   B. Microstrip antenna
   C. Horn antenna
   D. Slotted antenna

9. Pick up the correct statement from the following?

   A. The minimum frequency of light for which no electrons are emitted, is called threshold frequency
   B. Polarising angle of glass is 57.5°
   C. At the polarising angle, the reflected and refracted rays are orthogonal
   D. All the above

10. Pick up the correct statement from the following_________________?

    A. When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed
    B. When the electric vector is in the plane of incidence, vertical polarisation is formed
    C. When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed
    D. All of these