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Electronics and Communication Engineering (ECE) : Electromagnetic Field Theory - Quiz(MCQ)
When two vectors are perpendicular, their
A)
Cross product is zero
B)
Dot product is zero
C)
Both are zero
D)
Both are not necessarily zero

Correct Answer : Option (B) :   Dot product is zero

Explanation : Dot product of two perpendicular vectors is given by A.B = |a||b|cos 90, which is zero. Thus, dot product is zero and vectors are perpendicular.

Recently Updated in Electromagnetic Field Theory Questions
Q .
Radiation intensity in a given direction is the
A)
Energy radiated per square metre
B)
Power radiated per square metre
C)
Power radiated per unit solid angle in that direction
D)
None of the above

Correct Answer : Option (C) :   Power radiated per unit solid angle in that direction

Q .
Which of the following impedance inversion is obtained?
A)
Balun transformer
B)
A quarter wave line
C)
Short-circuited stub
D)
A half wave line

Correct Answer : Option (B) :   A quarter wave line

Q .
The wave in wave guide has
A)
Larger frequency than in the free space
B)
Diminishing wavelength than in the free space
C)
Group velocity inversely proportional to wavelength
D)
Larger wavelength than in the free space

Correct Answer : Option (D) :   Larger wavelength than in the free space

ECE MCQ's

Power Electronics
Digital Electronics
Analog Electronics
Microprocessors
Radio Receivers
Signals and Systems
Satellite Communication
Communication Systems
Microwave Communication
Automatic Control Systems
Materials and Components
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