Q. Find the value of D if the wave length of the wave is 40m, n=2 m and the angles are given as θ₁ = 0˚, θ₂ = 180˚.

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Q. Electromagnetic waves are represented in which of the following format?

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Q. For increasing accuracy, high frequency of propagation is used.

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Q. What would be the value of length if the distance is given as 30m, m= 3 and the change in length is 8m.

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Q. Phase difference can be expressed in which of the following format?

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Q. Which of the following represents the correct sequence for the basis of EDM propagation?

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Q. In amplitude modulation, which among the following is constant?

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Q. Modern phase techniques are capable of __________

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Q. Lower frequency is not suitable in_________

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Q. Which of the following represents the correct set of modulation classification?

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Q. Which of the following indicates the correct set of frequency employed in measuring process?

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Q. Which of the following is constant in the case of frequency modulation?

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Q. Which can’t be done in high frequency zones?

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Q. Modulating wave can also be known as ______

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Q. If 10mm is the accuracy considered, what will be the maximum value of λ for 1/1000 part?

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Q. Frequency modulation is equipped in all EDM instruments.

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Q. Different types of EDM’s are obtained on the basis of__________

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Q. Which among the following EDM instruments is having more range?

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Q. Which type of modulation is used in the case of microwave instrument?

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Q. The frequency range used in visible light instruments is______________

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