300+ TOP MCQs on Impedance and Answers

NEET  Physics is the very imporatant paper in the Medical Entrance EXAM. So these NEET Physics MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Physics objective questions on air pollution . NEET Physics Impedance Multiple Choice Questions

MCQs on Impedance :

1. What is the value of input impedance of a quarter-wave line 50 ohm and the load impedance of 20 ohms?
(A) 50
(B) 20
(C) 1000
(D) 125

Answer

Answer: (D) 125

2. The value of input impedance for a matched line will be equal to
(A) Load impedance
(B) Characteristic impedance
(C) Output impedance
(D) Zero

Answer

Answer: (B) Characteristic impedance

3. What is the ratio of  characteristic impedance to the input impedance if the ratio of load voltage to the input voltage is given as 5
(A) ⅕
(B) 5
(C) 10
(D) 25

Answer

Answer: (B) 5

4. The maximum impedance of a transmission line 50 ohm and the standing wave ratio of 2.5 is
(A) 20
(B) 125
(C) 200
(D) 75

Answer

Answer: (C) 125

5. What is the normally chosen value of the characteristic impedance of a transmission line?
(A) 50
(B) 75
(C) 50 or 75
(D) 100

Answer

Answer: (C) 50 or 75

6. What is the value of negative sequence impedance?
(A) 1
(B) Z
(C) Same as positive sequence
(D) infinity

Answer

Answer: (C) Same as positive sequence

7. The standing wave ratio is 4 for a transmission line of 75 ohms. What is the value of the minimum impedance?
(A) 75
(B) 300
(C) 18.75
(D) 150

Answer

Answer: (C) 18.75

8. A transmission line has a voltage of 24 V and a conduction current of 1.2 A. What will its receiving impedance?
(A) 25.2
(B) 22.8
(C) 28.8
(D) 20

Answer

Answer: (D) 20

9. What is the value of the characteristic impedance of a transmission line with impedance and admittance of 16 and 9?
(A) 25
(B) 1.33
(C) 0.75
(D) 7

Answer

Answer: (B) 1.33

10. The propagation constant of a transmission line with impedance and admittance of 9 and 16, respectively is
(A) 25
(B) 144
(C) 12
(D) 7

Answer

Answer: (C) 12