Orange
The Orange group is one of the world’s largest mobile communications companies, with operations in 16 countries across Europe and beyond. It provides a broad range of voice and data communication services to over 52 million customers worldwide.
One Response to “Orange”
1- Written test. Very easy if u have studied
> Communication and analog electronics papers.
>
> 2- written test contains only tech.qs., all
> objective.
> 50 qs,30 minute. so notime prob.
> 3-Dont do quanti or other papers 4 written. study
> only
> Communication and Analog papers( included in th
> esyll.of Electronics branch).
>
> 4- They perhaps prefer Electronics.
> 5- tech.interview mainly. but prepare 4 personal
> also.
>
>
1.Range of TIL logic supply or digital supply
a.0-5 V b.-12-+12 V c.2-8 V
2.power diodes are basically
a.silicon b.Ge c.none d.all above
3.LED emits light when
a.forward bias
b.reverse
4.Solar cells are
a.photconductive b.voltaic cell
5.Which trasmission is analog
a.PCM b.PAM c.FM
6.Which language generates bytecodes
a.C++ b.JAVA c.VB d.None
7.Antenna is
a.transformer b.refelector c.Ampifier
8.Conductivity in photpdiodes due to
a.GaAs b.PbS c.CdS
9.Which oscilator produces 1MHz frequency
a.collpits b.Rcphaseshift cWeinbridge d.None
10.Microwave consists of which band
a.UHF and SHF b.VHF c.UHF,SHF & EHF d.VLF,LF,HF
11.Which is fastest switching device
a.FET b.MOSFET c.BJT
12.Which kinds of devices are BJT &JFET
a.JFET is unipolar and BJT uniploar
a.JFET is bipolar and BJT uniploar
a.JFET is unipolar and BJT biploar
a.JFET is bipolar and BJT biploar
13.Lograithmic amplifiers are used in
a.ADDer b.divider c,.Multiplier d.all
14.In which stage modulation is done in high power AM transmission
a.Ifstage b.Buffer c.Oscilator d.RF power stage
15.FM disccrimintor converts modulated signakl to
a.PM b.AM c.PCM Ans-b
16.DPCM is used to
a,reduce bandwidth b.reduce thermal noise
17.I*F P is the power of carrier maxm power transmitted in am modulated wave
a.P b.2P c.1.5P
18.FM bandwidth is described by
a.Shennon,s eqn b.Bessel,s eqn c.Hartleiz eqn. ANS-b
19.Front to back ratio of antenna can be imoproved by
a.Sacrifuying gain b.Increasing area c.Narow abndwidth
20.Quantization error can be reduced by
a.Sampling rate b.Level s of sampling
21.Quantizaton eerrror occurs in
a.PCM ,b.PPM c.PWM
22.FM is useed for
a.LF b.HF c.VHF d.UHF
23.In demodulaiton of PCM it is first converted to
a.PPM b.PWM c.PAM .Nione
24.If the IF mixer tuned to a frequency of 1200 KHz and if IF frequency is 450 Hz.then image frequency is
a.750 b.1659
25.Which of the following refers to FET
a.hfe &hie
b.gm &rp
c.none
26.If the cross section of target is chanmging RADAR then scnas through?
27.Low freq. Respnse of RC coupled amplifie r can be
improved by
a.lowering coupling capapcitor
b.grate r biasing
c.reducing load
d.none
28.A dc supply voltage increases with
a.increase in load & decrese in capapcitance
29.If shift resisitor is of 4 bit how many stages
a.16 b.8 c.7 d.4
30.Tracking of RADAR is done by
a.duplex scanning b.duplex switching
31.Quantization is(S2/12 formul;a is)
aNS-directly proportional to square of level
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