A satellite that simply reflect back the signals from one region of the earth to the other region is known as

Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface ?

A

Ionosphere

B

Stratosphere

C

Mesosphere

D

Exosphere

Which layer of atmosphere does reflect radio-wave from the earth back into space?

A

Stratosphere

B

Thermosphere

C

Mesosphere

D

Ionosphere

The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where $$\delta {\text{S}}$$ = Static deflection of simply supported shaft due to uniformly distributed load)

A

$$\frac{{0.4985}}{{\sqrt {\delta {\text{S}}} }}$$

B

$$\frac{{0.5615}}{{\sqrt {\delta {\text{S}}} }}$$

C

$$\frac{{0.571}}{{\sqrt {\delta {\text{S}}} }}$$

D

$$\frac{{0.6253}}{{\sqrt {\delta {\text{S}}} }}$$

The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where $$\delta $$ = Static deflection of a simply supported shaft due to the point load)

A

$$\frac{{0.4985}}{{\sqrt \delta }}$$

B

$$\frac{{0.5615}}{{\sqrt \delta }}$$

C

$$\frac{{0.571}}{{\sqrt \delta }}$$

D

$$\frac{{0.6253}}{{\sqrt \delta }}$$

A device mounted on a communication satellite which receives, amplifies and re-transmits signals from earth station is

A

Track

B

Transponder

C

Transistor

D

Terminal

E

None of the above

A satellite signal transmitted from a satellite transponder to earth’s station.

A

Uplink

B

Downlink

C

Terrestrial

D

Earthbound

For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is:

A

Circular orbit

B

Sun-synchronous orbit

C

Near polar orbit

D

None of these

পৃথিবী পৃষ্ঠে একটি ইটের ওজন 81 N. পৃথিবীর অর্ধেক বাসার্ধের সমান উচ্চতায় এবং অর্ধেক বাসার্ধের সমান গভীরতায় ইউটির উপরে পৃথিবীর অভিকর্ষ বলের মান কত হবে?(A brick weighs 81 N on the surface of the earth. What are the earth's gravitational forces act on it at a height of half of the radius of the earth and at a depth of half of the radius of earth, respectively?)

A

36 N and 81 N

B

36 N and 40.5 N

C

36 N and 20.25 N

D

98 and 40.5 N

E

81 N and 81 N

Which Indian satellite had a main function to perform X-ray experiments in space and send back data to earth?

A

Aryabhatta

B

Bhaskara II

C

Bhaskara IL

D

None of the above

Signals can be analog or digital and a computer that processes the both type of signals is known as

A

Digital computer

B

Hybrid computer

C

Analog computer

D

Mainframe computer

A satellite that simply reflect back the signals from one region of the earth to the other region is known as

Related Questions