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Exam Questions Papers - Engineering

Q1:

What are the values of Emax and Emin displayed on the oscilloscope, when a 1 kV P-P carries is modulated to 50%?

A 2 kV, 0.5 kV

B 1 kV, 0.5 kV

C 0.75 kV, 0.25 kV

D 0.5 kV, 1.5 kV

ANS:C - 0.75 kV, 0.25 kV

Emax - Emin = 0.5 x 1 kV = 0.5 kV 2Emax = 1.5 kVi, Emax = 0.75 kV Emin = 0.25 kV.