# Effective Aperture Online Exam Quiz

Effective Aperture GK Quiz. Question and Answers related to Effective Aperture. MCQ (Multiple Choice Questions with answers about Effective Aperture

### Free space loss factor is given by ___

Options

A : \frac{\lambda}{4\pi R}

B : (\frac{\lambda}{4\pi R})^2

C : \frac{4\pi R}{\lambda}

D : (\frac{4\pi R}{\lambda})^2

Options

A : TRUE

B : FALSE

C : -

D : -

### If the operating frequency increases, powers received by the receiving antenna __

Options

A : will decrease

B : will Increase

C : is Independent of frequency

D : is not predictable

### The physical aperture of an isotropic radiator is ___

Options

A : \frac{4\pi \eta}{\lambda^2}

B : \frac{4\pi}{\lambda^2 \eta}

C : \frac{\lambda^2}{4\pi \eta}

D : \frac{\lambda^2\eta}{4\pi}

Options

A : R ? 2D2/?

B : R ? 2D2/?

C : R ? 2?2/D

D : R ? 2?2/D

### Which of the following is the Friss transmission equation for the matched polarization of antennas?

Options

A : \frac{P_r}{P_t} = \frac{G_t G_r\lambda^2}{(4?R)^2}

B : \frac{P_t}{P_r} = \frac{G_t G_r\lambda^2}{(4?R)^2}

C : \frac{P_r}{P_t} = \frac{G_t G_r\lambda^2}{4?R^2}

D : \frac{P_t}{P_r} = \frac{G_t G_r\lambda^2}{4?R^2}

### Antenna Bandwidth more Online Exam Quiz

Antenna Characteristics

Antenna Noise Temperature

Basics

Directive Gain

Directivity

Friis Transmission Equation