Power Radiation from Half Wave Dipole Online Exam Quiz

Power Radiation from Half Wave Dipole GK Quiz. Question and Answers related to Power Radiation from Half Wave Dipole. MCQ (Multiple Choice Questions with answers about Power Radiation from Half Wave Dipole

Find the power radiated from the half wave dipole at 2km away with magnetic field at point \theta=\frac{\pi}{2} is 10?A/m ?

Options

A : 0.576mW

B : 0.576W

C : 0.756W

D : 0.675W

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For a half-wave dipole with length ?/12, what is the antenna efficiency if the Radiation resistance is 2??

Options

A : 0.73

B : 0.073

C : 0.37

D : 0.78

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For the same current, the power radiated by half-wave dipole is four times that of the radiation by quarter wave monopole.

Options

A : TRUE

B : FALSE

C : -

D : -

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If the length of the dipole decreases, then the radiation resistance will__

Options

A : increase

B : decrease

C : depends on current distribution

D : not change

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If the power radiated by a half wave dipole is 100mW then power radiated by a quarter wave monopole under same current input is ___

Options

A : 50mW

B : 200mW

C : 100mW

D : 50W

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If the power radiated by a quarter wave monopole is 100mW, then power radiated by a half wave dipole with doubled current is __

Options

A : 800mW

B : 400mW

C : 200mW

D : 100mW

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In which of the following the power is radiated through a complete spherical surface?

Options

A : Half-wave dipole

B : Quarter-wave Monopole

C : Both Half-wave dipole & Quarter-wave Monopole

D : Neither Half-wave dipole nor Quarter-wave Monopole

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What is the radiation resistance of a short dipole of length L?

Options

A : 20?2(\frac{L}{\lambda})^2

B : 80?2(\frac{l}{\lambda})^2

C : 40?2(\frac{l}{\lambda})^2

D : 160?2(\frac{l}{\lambda})^2

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What is the radiation resistance of an antenna if input power to it is 1KW and current in it is 10A having a power loss of 200W?

Options

A : 10?

B : 2?

C : 12?

D : 8?

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What is the radiation resistance of an antenna if it radiates 1kW and current in it is Irms=10A?

Options

A : 0.1?

B : 1?

C : 10?

D : 100?

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