A Best Way To Crack Gorenment Job Exams

Electrical Engineering Objective Questions { Electromagnetism }



148. A circular loop has its radius increasing at a rate of 2 m/s. The loop is placed perpendicular to a constant magnetic field of 0.1 Wb/m2. When radius of the loop is 2 m, the emf induced in the loop will be
A. 0.8 icV
B. 0.4 TN
C. 0.2 ItV
D. zero
Discuss in Forum

149. Kirchhoff's current law for direct current is implicit in the expression
A. V. B = p
B.. rids= 0
C. V. B =0
D. V. H = - +
Discuss in Forum

150. Poisson's equation for an inhomogeneous medium is
A. cV2 V =-p
B. V.(c V V) = -p
C. V2(cV)= -p
D. V.(V c V) = -p
Discuss in Forum

151. The input impedance of a loss-less transmission line is 100 ohms when terminated in a short-circuit, and 64 ohms when terminated in an open circuit. The characteristic impedance of the line is
A. 80 ohms
B. 164 ohms
C. 36 ohms
D. 64 ohms
Discuss in Forum

152. Which one of the 'following sets of equations is independent in Maxwell's equations?
A. The two curl equations
B. The two divergence equations
C. Both the curl and divergence auditions
D. The two curl equations combined with the continuity equation.
Discuss in Forum

153. Two conducting shells of radii rt and r2 (ri r2), each with a charge 'Q' ar placed for apart in a uniform external electric field. The space surrounding each shell is filled with the same dielectric material.In this situation, the
A. shells will not experience any force
B. shells will experience identical forces
C. shell with radius r1 will experience a greater force
D. shell with radius r2 will experience a greater force
Discuss in Forum

154. Which of the following pairs of parameters and expressions is / are correctly matched? 1. Characteristic impedance ETH 2. Power flow density ....... V x1-1 3. Displacement current in non-conducting medium ....... E x1-1 Select the correct answer using the codes given below : Codes :
A. I alone
B. 2 and 3
C. 1 and 3
D. 1 and 2
Discuss in Forum

Page 22 of 36

« 20 21  22  2324 »