Basics Online Exam Quiz
Basics GK Quiz. Question and Answers related to Basics. MCQ (Multiple Choice Questions with answers about Basics
Directive gain is defined as a measure of concentration of power in a particular direction.
Options
A : TRUE
B : FALSE
C : -
D : -
Directive gain of antenna when radiation intensity is 5W/Steradian and radiated power 5W is __
Options
A : 4?
B : 1/4?
C : 25
D : 1
Equivalent circuit representation of an antenna is __
Options
A : Series R, L, C
B : Parallel R, L, C
C : Series R, L parallel to C
D : Parallel R, C series to L
For an isotropic antenna, the average power Pav can be expressed in terms of radiated power Pr as __
Options
A : Pav=Pr/4?
B : Pav=Pr/2?r2
C : Pav=Pr/2?
D : Pav=Pr/4?r2
Radiation resistance of a half-wave dipole is __
Options
A : 36.56?
B : 18.28?
C : 73.12?
D : 40.24?
Radiation resistance of a Hertzian dipole of length ?/8 is __
Options
A : 12.33?
B : 8.54?
C : 10.56?
D : 13.22?
Relation between directivity and effective area of transmitting and receiving antenna is __
Options
A : Dt At=Dr Ar
B : Dt Ar=Dr At
C : At Dt=?Dr Ar
D : Dt At=?Dr Ar
The axis of back lobe makes an angle of 180? with respect to the beam of an antenna.
Options
A : TRUE
B : FALSE
C : -
D : -
The Directive gain is __ on input power to antenna and ___ on power due to ohmic losses.
Options
A : Independent, independent
B : Dependent, independent
C : Independent, dependent
D : Dependent, dependent
The equivalent area when multiplied by the instant power density which leads to free radiation of power at antenna is called as ___
Options
A : Loss area
B : Scattering area
C : Captured area
D : Effective area