ECIL Written Test Paper
Placement paper of ECIL| Written Test Examination Questions with answers of ECIL -Electrical and Electronics question with answers
1.Microwave devices are best analyzed using ?
2.Bolometer is used to measure..?
3.Routing occurs in which layer..?
4.Beta rays are made up of
5.Light propagation in optical fibre uses total internal reflection
b)outer surface of claddin
6.Problems on opamp, one was find the V0 in the given non inverting configuration and other was summing ckt.
7.One problem on noise figure ? Given noise factor=3 (SNR)output=10dB find (SNR)input in dB
8.Power gain was given find voltage gain
9.Thermo electric cooling is based on ?
Ans. Peltier effect
10.ZL and Z0 given find reflection coefficient
11.Gain of parabolic reflector antenna ..given frequency and aperture area
12.Laplace of coswt
13.Problem on successive approximation type adc
14.Resolution of adc
15.Given a four bit DAC, in which the bit b1 (b3 b2 b1 b0)next to LSB is freeze to 0 ,then which two date bits will result in the same output
16.G(s) given, find dc gain k
17.Zener ckt problem, find output voltage
18.Noise margin expression
19.No. of 8k*8bit memory chips require for 12 address lines
20.Memory interfacing problem ending address given find the starting address
21.For JFET to operate in linear region Vgs should be..?
22.Voltmeter full scale deviation is 1000v for internal resistance 10k. what resistance to be add so that the full scale deviation wil be increase to 5000v ..?
23.Two emf 1.5 v each having internal resistance 0.3ohm and 0.6ohm are connected in parallel to a load 0.8ohm. find total power dissipated
24Find circuit through a resistor .given ckt. Superposition theorem
25Major Disadvantages of FM is..?
26.Special diode made up of metal and semiconductor..? Schottkey
27.When two no. are multiplied in 2s compliment form the answer will always in between..?
a)0 to 255
b)-255 to 0
d) -64 to 56
28.Microwave owen consist of
a) TWT and induction heating
b)Magnetron and dielevtric heating
29.Mobility of electron .?
a)increases with temperature
b)decreases with temperature
c)independent of temperature
d)increases as square of temperature
30.Problem on PRF radar
31Waveguide acts as a ?
A)low pass filter
b)band pass filter
32.Simple c program p=5 q=6, p=q &q=p, find p=? q=?
33Transfer function is given = 1/(1+sT) find steady state error for ramp input.
a)0 b)infinity c)T/2 d)T
34.Find Wn given C(s) and zeta value
35.Simple analog problem involving Vce and B of npn transistor in common emitter
36.Emitter follower is .a)unity gain amplifier