In which zone does the amplitude of an indication from a given discontinuity diminish exponentially as the distance increases?

M

Mr. Dubey • 52.30K Points
Coach

Q. In which zone does the amplitude of an indication from a given discontinuity diminish exponentially as the distance increases?

(A) Far field zone

(B) Near field zone

(C) Dead zone

(D) Fresnel zone

Correct : Option (A)

Share

Discusssion

Login to discuss.

Be the first to start discuss.

Related MCQs

Q. The shorter the wavelength of X or gamma rays:

Q. Which type of coupling will be preferred for connecting two shafts having relative speed?

Q. Therm is a unit of

Q. A shaft carrying two rotors at its ends will have

Q. Which type of emulsifier is designed to be used as a ‘scrubber’?

Q. Which of the following is not correct about fixture?

Q. Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low

Q. A 4 pole, 500V shunt motor has 720 wave connected conductors on its armature. The full load armature current is 60A and flux per pole is 0.03Wb. The a

Q. If the pressure drop(ΔP) is 200 units, the flux(J) is 100 units,what is the hydraulic membrane permeability?

Q. When the belt speed increases