Exercise: Electromagnetic Field Theory

Questions for: Electromagnetic Field Theory

In case of surface waves the field strength at a point is directly proportional to
A:
antenna height
B:
wave frequency
C:
current of the antenna
D:
distance of the point from the antenna
Answer: D
No answer description is available. Let's discuss.
📖
📝
💬
👁️
Which of the following impedance inversion is obtained?
A:
Short-circuited stub
B:
A quarter wave line
C:
Balun transformer
D:
A half wave line
Answer: B
No answer description is available. Let's discuss.
📖
📝
💬
👁️
A time varying field is applied to a circuit with a capacitor- which of the following statements is correct?
A:
The conduction current is equal to the displacement current
B:
The conduction current density is J and displacement current density
C:
The current in the circuit consists of conduction current and displacement current
D:
The displacement current passes through the capacitor
Answer: B
No answer description is available. Let's discuss.
📖
📝
💬
👁️
A waveguide operated below cut off frequency can be used as
A:
phase shifter
B:
an attenuator
C:
an isolator
D:
none
Answer: B
No answer description is available. Let's discuss.
📖
📝
💬
👁️
Which of the following will increase the antenna radiation efficiency?
A:
Use of larger section of conductor
B:
Providing insulation on conductor
C:
Top loading of antenna
D:
Any of the above
Answer: C
No answer description is available. Let's discuss.
📖
📝
💬
👁️
Ad Slot (Above Pagination)
Quiz