This set of Electromagnetic Theory Multiple Choice Questions & Answers (MCQs) focuses on “Reflection and Transmission Coefficients”. 1. The reflection coefficient of a wave with transmission coefficient 0.35 is a) 1.35 b) 0.65 c) 0.35 d) 0.7 2. The incident wave amplitude is 24 units. Find the reflected wave amplitude if the reflection coefficient is … Read more
This set of Electromagnetic Theory Multiple Choice Questions & Answers (MCQs) focuses on “Input and Characteristic Impedances”. 1. The characteristic impedance of a quarter wave transformer with load and input impedances given by 30 and 75 respectively is a) 47.43 b) 37.34 c) 73.23 d) 67.45 2. The input impedance of a quarter wave line … Read more
This set of Electromagnetic Theory Multiple Choice Questions & Answers (MCQs) focuses on “Transmission Line Equations”. 1. Which of the following parameters does not exist in the transmission line equation? a) R b) Zo c) ZL d) Propagation constant 2. For an infinite transmission line, the characteristic impedance is given by 50 ohm. Find the … Read more
This set of Electromagnetic Theory Questions and Answers for Entrance exams focuses on “Transmission Line Secondary Parameters”. 1. The wavelength of a line with a phase constant of 6.28 units is a) 2 b) 1 c) 0.5 d) 3.14 2. The wavelength of a wave with a frequency of 6 GHz in air is a) … Read more
This set of Electromagnetic Theory Multiple Choice Questions & Answers (MCQs) focuses on “Transmission Line Primary Parameters”. 1. Which of the following parameters is not a primary parameter? a) Resistance b) Attenuation constant c) Capacitance d) Conductance 2. The networks in which the R, L, C parameters are individually concentrated or lumped at discrete points … Read more
This set of Electromagnetic Theory Multiple Choice Questions & Answers (MCQs) focuses on “S and P Polarised Waves”. 1. The resultant electric field of a wave with Ex = 3 and Ey = 4 will be a) 7 b) 1 c) 25 d) 5 2. In S polarisation, the electric field lies in the plane … Read more
This set of Electromagnetic Theory Multiple Choice Questions & Answers (MCQs) focuses on “Types of Polarization”. 1. When the phase angle between the Ex and Ey component is 00 or 1800, the polarisation is a) Elliptical b) Circular c) Linear d) Perpendicular 2. The magnitude of the Ex and Ey components are same in which … Read more
This set of Electromagnetic Theory Multiple Choice Questions & Answers (MCQs) focuses on “Snell Law and Critical Angle”. 1. The Snell’s law can be derived from which type of incidence? a) Incidence angle b) Reflected angle c) Refracted angle d) Oblique incidence 2. The Snell’s law is given by a) N1 sin θi = N2 … Read more
This set of Electromagnetic Theory Multiple Choice Questions & Answers (MCQs) focuses on “Brewster Angle”. 1. Brewster angle is valid for which type of polarisation? a) Perpendicular b) Parallel c) S polarised d) P polarised 2. The Brewster angle is expressed as a) Tan-1(n) b) Tan-1(n1/n2) c) Tan-1(n2/n1) d) Tan (n) 3. The refractive index … Read more
This set of Electromagnetic Theory Multiple Choice Questions & Answers (MCQs) focuses on “Refractive Index and Numerical Aperture”. 1. The expression for refractive index is given by a) N = v/c b) N = c/v c) N = cv d) N = 1/cv 2. Numerical aperture is expressed as the a) NA = sin θa … Read more
