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GATE 2015 : Electronics And Communication Engineering (Set 3)

14 pages, 55 questions, 16 questions with responses, 22 total responses,

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GATE 2015 SET-3 ELECTRONICS AND COMMUNICATION ENGINEERING - EC Q. 1 Q. 25 carry one mark each. Q.1 1 tan x , the determinant of AT A 1 is 1 tan x For A = (B) cos 4x (A) sec 2 x Q.2 =2 If =2 (B) (C) is a circle of radius with centre ( ) + + =4 with respect to (D) , in the complex z-plane and if is equal to =0 is a non-zero integer, then equals (A) 2 Q.4 (D) 0 The contour on the x-y plane, where the partial derivative of the partial derivative of 6 + 4 with respect to , is (A) Q.3 (C) 1 (B) 0 (D) 2 (C) Consider the function g (t ) = e t sin(2 t )u (t ) where u (t ) is the unit step function. The area under g (t ) is _______. Q.5 1 The value of n is ______. n =0 2 Q.6 For the circuit shown in the figure, the Thevenin equivalent voltage (in Volts) across terminals a-b is ________. n a 3 12 V 6 1A b Q.7 In the circuit shown, the voltage VX (in Volts) is _______. 0.5 VX 10 + 5A VX 20 8 + - 0.25 VX - EC 1/14

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