# Antenna Noise Temperature Online Exam Quiz

Antenna Noise Temperature GK Quiz. Question and Answers related to Antenna Noise Temperature. MCQ (Multiple Choice Questions with answers about Antenna Noise Temperature

Options

A : Te=To (F-1)

B : Te=To/(F-1)

C : Te=To/(F+1)

D : Te=To (F+1)

### Expression for noise figure F related to the effective noise temperature Te is __

Options

A : F=1+\frac{T_e}{T_o}

B : F=1+\frac{T_0}{T_e}

C : F=1-\frac{T_e}{T_o}

D : F=1-\frac{T_0}{T_e}

Options

A : 290K

B : 580K

C : 289K

D : 195K

Options

A : ?/4

B : ?/6

C : ?/8

D : ?/2

### The ratio of radiation intensity in a given direction from antenna to the radiation intensity over all directions is called as __

Options

A : Directivity

C : Gain of antenna

D : Array Factor

Options

A : ?.A=J

B : ??A=H

C : ?2A=-?J

D : ?2A=??H

Options

A : 0.997

B : 0.779

C : 0.669

D : 0.977

Options

A : TA= TB

B : TA > TB

C : TA < TB

D : TA ? TB

Options

A : 2

B : 1

C : 0

D : 1/T_(o )

### Which expression suits best when the solid angle obtained by the noise source is less than antenna solid angle?

Options

A : PA ?A=PB ?B and ?TA=\frac{\Omega_B}{\Omega_A} T_B

B : PA ?B=PB ?A and ?TA=\frac{\Omega_B}{\Omega_A} T_B

C : ?TA=\frac{\Omega_A}{\Omega_B} T_B and PA ?B=PB ?A

D : ?TA=\frac{\Omega_A}{\Omega_B} T_B and PA ?A=PB ?B

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