This set of Microwave Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Quarter Wave Transformer”. 1. If a transmission line of characteristic impedance 50 Ω is to be matched to a load of 100Ω, then the characteristic impedance of the ƛ/4 transmission line to be used is: a) 70.71 Ω b) 50 Ω c) … Read more
This set of Microwave Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Smith Chart”. 1. Smith chart is based on the polar plot of: a) Reactance b) Voltage c) Current d) Voltage reflection co-efficient 2. Any passively realizable reflection coefficient can be plotted as a unique point on the smith chart. This statement implies … Read more
This set of Microwave Engineering Interview Questions and Answers focuses on “Terminated Lossless Transmission Lines – 2”. 1. Expression for input impedance of a transmission line in terms of load impedance and characteristic impedance is: a) Z0 (ZL+j Z0tan βl)/ (Z0+j ZLtan βl) b) (Z0+j ZLtan βl)/ (ZL+j Z0tan βl) c) Z0 (ZL-j Z0tan βl)/ … Read more
This set of Microwave Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Terminated Lossless Transmission Lines – 1”. 1. When a lossless line is terminated with an arbitrary load impedance ZL, then it : a) causes wave reflection on transmission lines b) transmits the entire supplied power c) causes loss in transmission line d) … Read more
This set of Microwave Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Co-axial Lines Field Analysis”. 1. The expression for conductance G of a coaxial transmission line with outer radius ‘b’ and inner radius ‘a’ is given by: a) 2πωε”/ (ln b/a) b) (R/2π)(1/a+1/b) c) Rb/πa d) 2Rb/a 2. Expression for resistance R of … Read more
This set of Microwave Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Field Analysis of Transmission Lines”. 1. In a two wire transmission line, if the distance between the lines is 20 mm and the radii is 5 mm then the inductance of the line is: a) 0.1 µH b) 0.526 µH c) 0.9 … Read more
This set of Microwave Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Lossless Lines”. 1. The value of ‘α’ for a lossless line is: a) 0 b) 1 c) Infinity d) Data insufficient 2. If propagation constant is 12:60°, then the value of phase constant and attenuation constant is: a) α=6, β=10.39 b) α=61, … Read more
This set of Basic Microwave Engineering Questions and Answers focuses on “Lumped Element Circuit Model of Transmission Line”. 1. The key difference between circuit theory and transmission line theory is: a) circuit elements b) voltage c) current d) electrical size 2. Transmission line is a _________ parameter network. a) lumped b) distributed c) active d) … Read more
