The power reflected by a wave with incident power of 16 units is (given that the reflection coefficient is 0.5).

Consider a lossless antenna with a power gain of 10. What is the directivity of the antenna in dB?

In the left-hand rule, the forefinger always represents the direction of the

If the open-circuit impedance (Z_OC) is 100Ω and the short-circuit impedance (Z_SC) is 64Ω, then the characteristic impedance (Z₀) is:

An isolated sphere has a capacitance of 50 pF. How much charge should be placed on it to raise its potential to 10,000 V?

Which of the following loads normally needs starting torque more than the rated torque?

What is the definition of the coupling factor?

Four infinite sheets of charge are located at y = 7 (20 pC/m²), y = 3 (-8 pC/m²), y = -1 (6 pC/m²), and y = -4 (-18 pC/m²). What is the electric field at the point (2, 6, -4) in the y-direction?

A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m² with a velocity of 50 m/s. The induced emf will be reduced to half if the conductor moves at an angle of

Assertion (A): TWT uses a focusing mechanism to prevent the electron beam from spreading.

Reason (R): In a TWT, the electron beam has to travel a much longer distance than in a klystron.