| March 23rd, 2018 10:36 AM | |
| Vishal Kotkar | Re: pgecet previous papers for ece download As you want here I am providing Andhra Pradesh Post-Graduate Engineering Common Entrance Test (AP PGECET) ECE Previous Papers on your demand : Electronics & Communication 1 A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system-response at 20 Hz is A) - 90° B) 0° C) 90° D) - 180° Answer : (A) A D V E R T I S E M E N T 2 In an abrupt p-n junction, the doping concentrations on the p-side and n-side are NA = 9x 1016/cm3 and ND = 1 x 1016/cm3 respectively. The p-n junction is reverse biased and the total depletion width is 3 m m. The depletion width on the p-side is A) 2.7 mm B) 0.3 mm. C) 2.25 mm D) 0.75 mm Answer : (B) 3 A master-slave flip-flop has the characteristic that A) change in the input immediately reflected in the output B) change in the output occurs when the state of the master is affected C) change in the output occurs when the state of the slave is affected D) both the master and the slave states are affected at the same time Answer : (C) 4 A parallel plate air-filled capacitor has plate area of l0-4 m2 and plate separation of 10-3 m. It is connected to a 0.5 V, 3.6 GHz source. The magnitude of the displacement current is (e0 = 1/36p x 10-9 F/m) A) 10 mA B) 100 mA C) 10 A D) 1.59 mA Answer : (A) 5 The phase velocity of an electromagnetic wave propagating in a hollow metallic rectangular waveguide in the TE10 mode is A)equal to its group velocity B) less than the velocity of light in free space C) equal to the velocityof light in free space D) greater than the velocity of light in free space Answer : (D) 6 Noise with uniform power spectral density of N0W/Hz is passed through a filter H (w) = 2 exp(-jwtd) followed by an ideal low pass filter of bandwidth BHz. The output noise power in Watts is A) 2N0B B) 4N0B C) eN0B D) 16 N0B Answer : (B Andhra Pradesh Post-Graduate Engineering Common Entrance Test (AP PGECET) ECE Previous Papers    |
| March 23rd, 2018 10:32 AM | |
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| December 25th, 2015 02:03 PM | |
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