Top 350+ Solved Electromagnetics MCQ Questions Answer
Q. Three capacitors each of the capacity C are given. The resultant capacity 2/3 Ccan be obtained by using them
a. all in series
b. all in parallel
c. two in parallel and third in series with this combination
d. two in series and third in parallel across this combination
Q. For which of the following parameter variation, the capacitance of the capacitorremains unaffected ?
a. distance between plates
b. area of the plates
c. nature of dielectric
d. thickness of the plates
Q. Which of the following expression is correct for electric field strength ?
a. e = d/e
b. e = d2/t
c. e = jtd
d. e= nd2
Q. Divergence of gradient of a vector function is equivalent to
a. laplacian operation
b. curl operation
c. double gradient operation
d. null vector
Q. Curl of gradient of a vector is
a. unity
b. zero
c. null vector
d. depends on the constants of the vector
Q. Find the gradient of the function given by, x2 + y2 + z2 at (1,1,1)
a. i + j + k
b. 2i + 2j + 2k
c. 2xi + 2yj + 2zk
d. 4xi + 2yj + 4zk
Q. The gradient can be replaced by which of the following?
a. maxwell equation
b. volume integral
c. differential equation
d. surface integral
Q. . Find the gradient of the function sin x + cos y.
a. cos x i – sin y j
b. cos x i + sin y j
c. sin x i – cos y j
d. sin x i + cos y j