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The test of JSPL held on 17th February 2008 was more or less of an easy type for instrumentation stream. Many questions were from power electronics and communications. The ques that I remember were:

Verbal (20 ques):

1. 10 ques based on two RC passages,dealing with computer languages.

2. remaining ques on articles, prepositions and word meanings.

Numerical (20 ques):
1. all ques based on simple but lengthy calculations involving %ages, profit and loss, ratio-proportion,etc.

Attention to detail(15 ques):
1. ques based on pattern recognition, logical reasoning and types like if + is -, - is *, etc.

Technical (60 ques-INSTRUMENTATION):

I remember 51 ques. They are:

what does ‘value’ mean in value engg.

what is value engg used for

two ques on statement of nyquist-shannon theorem

i/p and o/p impedance of instrumentation amplifier

given open loop TF for unity f/b calc damping ratio

given G(s)H(s) calc type of system

thru which signal does µP communicate with memory

12 address lines address how much of memory

no of timers of 8051

prog device used with 8051

µcontrollers used widely in which industry

ques on what is LPP

which technique used for optimization in OR

which of these deals with reducing waiting time(ans: queuing theory)

given BW and SNR of a communication channel calc its maxm transmission rate in kbps when affected by white Gaussian noise

what is a µcontroller

no of components in VLSI

what is done in VLSI

what are the procedures for sampling of a signal

which is the most commonly used non-impulse type of pump

how do you go from time domain to freq domain(both fourier and laplace were in the options)

what is thyristor

what is triac

diff betw triac and SCR

why is equalizing ckt used in series with SCR

what freq crystal should be used betw pin 1 n 2 of a µP

if for a resistive load in an SCR ckt the current is ripple free and equal to 20 A what will it be when 20 mH inductor connected to the load

if load current in an SCR is I, what is the average thyristor current for a 1-f converter

maxm efficiency of AM power

given signal freq and intermediate freq calc image freq

when are equalizing pulses applied in TV

what is a spirometer

what is used to measure heart sounds

minm duration of firing pulses for a thyristor

which of these transforms is also called tustin ’s method( or something like that)

why is RC snubber ckt used

what type of waveform produced by RC oscillator

diff betw inverter and oscillator output

for a 6 phase 60 Hz half wave rectifier what is the triple freq of the output

which of the following modulation is digital: PCM/ PAM/ PWM/ PTM

which method of ctrl removes offset

eqn of PID

what filter used for extracting SSB output

CMRR is expressed commonly in

integrated value of step fn.

differentiated value of const fn.

what is the kidney dialysis method(artificial) called

quantity analogous to current in pneumatics

quantity analogous to mass in rotational motion

which of these theorems not used in filters( ans: norton’s theorem)

which of these is UHF(1.68MHz,16.8Mhz,168Mhz,1680MHz



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