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Match column A with column B.
Column A
1. Point electromagnetic source
2. Dish antenna
3. Yagi-Uda antenna
Column B
P. Highly directional
Q. End fire
R. Isotropic
- 1 → P
2 → Q
3 → R
- 1 → R
2 → P
3 → Q
- 1 → Q
2 → P
3 → R
- 1 → R
2 → Q
3 → P
Correct answer: 1 → R
2 → P
3 → Q
Solution
A point EM source radiates isotropically (1->R), a dish antenna is highly directional (2->P), and a Yagi-Uda is an end-fire array (3->Q). This matching is option 1, not the stored option 3.
Related GATE Engineering Mathematics questions
- A vector field p and a scalar field r are given by
p = (2x² - 3xy + z²) î + (2y² - 3yz + x²) ĵ + (2z² - 3xz + x²) k̂
r = 6x² + 4y² - z² - 9xyz - 2xy + 3xz - yz
Consider the statements P and Q.
P: Curl of the gradient of the scalar field r is a null vector.
Q: Divergence of curl of the vector field p is zero.
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