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GANDHI VIDYALAYA INTER COLLEGE ALAM BAGH LUCKNOW by NFL

Details of GANDHI VIDYALAYA INTER COLLEGE ALAM BAGH LUCKNOW by NFL conducted by NFL for job interview.
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1)Gain bandwidth product of 2 stage CE amplifier compared to single stage
a). greater b). lesser c). same etc

2)Early effect in transistor leads in
a). Fast switch b). slow switch etc

3)MOSFET acts as a
a). Resistor b). inductor c). capcitor etc

4)Normal PH is
a)7 b)2 c)5 etc

5)Gave number of bits as 8 and max voltage as 100V asked to calculate resolution

6)strain guage working principle
a). resistor c). capacitor etc

7)Class AB property
a). More efficiency b). avoids crossoverdistrotion

8)3-4 problems related to oscilloscope

9)Gave a simple block diagram asked to find TF

10)Gave discrete sequence asked to calculate DFT

11)x(at)------Ztransform---
a)1/aX(z/a) etc

12)Peak overshoot 100% calculate damping factor
a)0.707 b)1.732 c)0.5 etc

13)gave transfer function asked to calculate phase crossover frequency

14)If modulating frequency doubles then BW of FM becomes
a). twice b). half c). same etc

15)Gave unmodulated carrier power and modulated carrier power asked calculate modulation index

16)In TDM system no: of telephone channels give asked to calculate o/p freequecy

17)3 to 4 problems on bridges and instrumentation

18)If range is more it leads in
a). More precision b). more accuracy c). more error

19)2to3 problems on ADC and DAC to calculate the number or output bits reqd

20)Problem based on channel capacity theorm

21)Vectorred interrupt among the following
a). RST 6.5 b). RST 5.5 c). TRAP d)INTR

22)Memory of 64x1k available 4 such memory clubbed together with single address line give
a)16x16k b)256x1k etc

23)For a stable system
a) h[n]!=0 n>0
b) h[n]!=0 n