GATE 2019: EMT Live Practice Quiz (App update required to attempt this test)

Find the Laplacian of the scalar field

V = 10r sin²θcos

A vector field to represent a magnetic field at (1, 2, 3) the value of R should be,

An air filled rectangular waveguide of dimensions a = 4 cm, b = 2 cm transports energy in the dominant mode at a rate of 2 mw. If the frequency of operation is 10 GHz. Determine the peak value of electric field in the wave guide?

Two short dipoles are placed along Z axis with equal currents flowing through them with no phase difference between currents. If they are separated by a distance of λ then the radiation pattern will be?

A 200 m long transmission line having parameters shown in the figure is terminated into a load R_L. The line is connected to a 400 V source having source resistance R_S through which a written is closed at t = 0, The transient response of the circuit at the input of the line is also drawn in figure. The value of R_L in Ω is _______ ()

A rectangular loop carrying current I₂ is placed parallel to infinitely long filamentary wire carrying current I₁. The force experienced by the loop is _____

given : I₁ = 5A, I₂ = 1A, ₀ = 1m, a = 1m, b = 2m m = m₀

A loop as shown in figure is made to rotate in uniform magnetic B_o a_xwb/m² The loop rotates at a frequency of 50 Hz about cuts the flux lines, and at time t = 0, it is at t = 1 msec, in mA is ________. (B_o = 50 m Wb/m²)

The radiation intensity of certain antenna is U(θ , ϕ) = Determine directivity of antenna ____________ .