Factors Online Exam Quiz

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

Electrical size of antenna is increased by which of the following?

Options

A : Antenna Array

B : Decreasing the coverage area

C : Increasing the coverage area

D : Using a single antenna

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Find the angle at which nulls occur for the two element array antenna with separation ?/4 and phase difference is 0?

Options

A : Doesn't exist

B : 0

C : ?/2

D : ?/4

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Find the angle at which nulls occur for the two element array antenna with separation ?/4 and phase difference is ?/2?

Options

A : 0

B : ?/2

C : ?/4

D : ?

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Find the angle at which nulls occur for the two element array antenna with separation ?/4 and phase difference is -?/2?

Options

A : 0

B : ?/2

C : ?/4

D : ?

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For long distance communication, which of the property is mainly necessary for the antenna?

Options

A : High directivity

B : Low directivity

C : Low gain

D : Broad beam width

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For N- element linear uniform array, the normalized array factor is represented as __

Options

A : \frac{sin(N?/2)}{N?/2}

B : \frac{cos(N?/2)}{N?/2}

C : N\frac{sin(?/2)}{?/2}

D : N\frac{cos(N?/2)}{N?/2}

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Multiplying the normalized field with the normalized array factor gives ___

Options

A : pattern multiplication

B : array factor

C : beamwidth

D : null

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The electrical size of antenna is increased by antenna array to avoid size lobes compared to single antenna.

Options

A : TRUE

B : FALSE

C : -

D : -

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Which of the following is false about the single antenna for long distance communication?

Options

A : Enlarging may create side lobes

B : No side lobes

C : High directivity is required

D : High Gain is required

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Which of the following is false regarding Antenna array?

Options

A : Directivity increases

B : Directivity decreases

C : Beam width decreases

D : Gain increases

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