NTPC 2009 Question Paper Question Pattern And Answers.
Pattern 120 question technical 50 Aptitude
Weightage of subjects as follows
Technical
Instrumentation—-15-20 question
Communication —— 15-20
Control systems ——-15-20
Microprocessors8085 —4-5
Digital electronics ——9-11
Signal systems ——- 3-4
Electronics ————13-15
Aptitude
English —-20
Quant——20
Reasoning—10
Question which I remember as follows
Technical
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<0 c) h[n]=0 n0
24)Wn in DFT a shifting property was asked
25)Wheat stone bidge used for measuring
a) resistor b) inducator etc
26)RLC ckt response
a) exponentially increasing b) decreasing etc
27)FET is a
a) VCVS b) CCCS c) VCCS d) CCVS
28)Gave a TF asked to identify the poles and zeroes
29)Gave a characteristic equation asked to find number poles in right side
30)Optical wavelength range asked
31)LASER abbreviation———
32)Schotky TTL diode is used to reduce
a) delay b) gates c) power d) none
Aptitude
English
1) Prepostions 3 to 4
2)Synonyms & antonyms
3)grammer
Quant
1)Ratios
2)Profit & loss
3)Bar graph given asked to find several things
4)Puzzles related persons going to different offices
5)Words coding etc
Similar Pages…
See Also……