# Aperture Antenna - Beamwidths Online Exam Quiz

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

### Find the HPBW of the uniform rectangular aperture antenna with 4??2? in the E-plane?

**Options**

A : 0.443

B : 0.886

C : 0.25

D : 0.5

### Half-power Beam width in E-plane for a rectangular aperture antenna of a?b is given by __

**Options**

A : 0.886?/b

B : 0.443?/b

C : 0.5?/b

D : ?/b

### Larger the size of the aperture, the narrower is the Beam-widths.

**Options**

A : TRUE

B : FALSE

C : -

D : -

### The first null beam width in the E-plane of a rectangular aperture of a?b is given by ___

**Options**

A : 2sin-1?(?/b)

B : sin-1?(?/a)

C : 2sec-1?(?/b)

D : 2cos-1?(?/a)

### The value at which the second null occurs in H-plane of rectangular aperture of a*b is given by __

**Options**

A : sin-1?(2?/a)

B : sin-1?(?/a)

C : sin-1?(a/2?)

D : sin-1?(a/?)

### When two solutions of the different concentration are separated by the semi permeable membrane then the solvent flows from low to higher concentration is called osmosis.

**Options**

A : TRUE

B : FALSE

C : -

D : -

### Which of the following method is not the method of desalination?

**Options**

A : Reverse osmosis

B : Multi flash distillation

C : Electro dialysis

D : Smelting

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