1
GATE ECE 1988
MCQ (Single Correct Answer)
+2
-0.6
A two - wire transmission line of characteristic impedance $$Z_0$$ is connected to a load of impedance $${Z_L}({Z_L}\, \ne \,\,{Z_0})$$. Impedance matching cannot be achieved with
A
a quarter-wavelength transformer
B
a half-wavelength transformer
C
an open-circuited parallel stub
D
a short-circuited parallel stub
2
GATE ECE 1988
MCQ (Single Correct Answer)
+2
-0.6
Vector potential is a vector
A
whose curl is equal to the magnetic flux density
B
whose curl is equal to the electric field intensity
C
whose divergence is equal to the electric potential
D
which is equal to the vector product E x H
3
GATE ECE 1988
MCQ (More than One Correct Answer)
+2
-0
On either side of a charge-free interface between two media,
A
the normal components of the electric field are equal
B
the tangential components of the electric field are equal
C
the normal components of the electric flux density are equal
D
the tangential components of the electric flux density are equal
4
GATE ECE 1988
MCQ (More than One Correct Answer)
+2
-0
For a normal mode EM wave propagating in a hollow rectangular wave guide
A
the phase velocity is greater than the group velocity
B
the phase velocity is greater than velocity of light in free space
C
the phase velocity is less than the velocity of light in free space
D
the phase velocity may be either greater than or less than the group velocity
EXAM MAP