BSNL JTO Exam paper
Following Are Bharath Sanchar Nigam Limited (BSNL) Junior Telecom Officers (JTO) Exam Paper::–
If the voltage applied across a capacitance is triangular in waveform then the waveform of the current is-
a) Triangular
b) Trapezoidal
c) Sinusoidal
d) Rectangular
Answer is :- Rectangular
1. One of the following statement which is true for relative dielectric constant is -
a) It is dimensionless
b) It is not equal to unity for vacuum
c) It’s value for all substances is less than one
d) None
Answer is :- It is dimensionless
2. Pure metals generally have-
a) high conductivity and low temperature coefficient
b) high conductivity and large temperature coefficient
c) low conductivity and zero temperature coefficient
d) low conductivity and high temperature coefficient
Answer is :- high conductivity and large temperature coefficient
3. For small size, high frequency coils, the most common core material is
a) Air
b) Ferrite
c) Powdered ion
d) Steel
Answer is :- Air
4. For an abrupt junction Varactor diode, the dependence of device capacitance (C) on applied reverse bias (V) is given by-
a) C a V1/3
b) C a V-1/3
c) C a V1/2
d) C a V-1/2
Answer is :- C a V-1/3
5. A superconductor is a-
a) A material showing perfect conductivity and Meissner effect below a critical temperature
b) A conductor having zero resistance
c) A perfect conductor with highest dimagnetic susceptibility
d) A perfect conductor which becomes resistive when the current density through it exceeds a critical value
Answer is :-A material showing perfect conductivity and Meissner effect below a critical temperature
6. When a semiconductor based temperature transducer has a temperature coefficient of –2500 mV/0C then this transducer is indeed a-
a) Thermistor
b) Forward biased pn junction diode
c) Reverse biased pn junction diode
d) FET
Answer is :- Forward biased pn junction diode
7. The location of lightning arrestor is -
a) Near the transformer
b) Near the circuit breaker
c) Away from the transformer
d) None
Answer is :- Near the transformer
8. Time constant of an RC circuit increases if the value of the resistance is -
a) Increased
b) Decreased
c) Neither a nor b
d) Both a and b
Answer is :- Increased
9. Intrinsic semiconductors are those which -
a) Are available locally
b) Are made of the semiconductor material in its purest from
c) Have more electrons than holes
d) Have zero energy gaps
Answer is :- Are made of the semiconductor material in its purest from
10. The primary control on drain current in a JFET is exerted by -
a) Channel resistance
b) Size of depletion regions
c) Voltage drop across channel
d) Gate reverse bias
Answer is :- Gate reverse bias
11. The electrical conductivity of metals which is expressed in ohm-1 m-1 is of the order of -
a) 1010
b) 105
c) 10-4
d) 10-6
Answer is :- 105
12. When biased correctly, a zener diode –
a) acts as a fixed resistance
b) has a constant voltage across it
c) has a constant current passing through it
d) never overheats
Answer is :- has a constant voltage across it
13. The current amplification factor adc is given by –
a) IC/IE
b) IC/IB
c) IB/IC
d) IB/IC
Answer is :- IC/IE
14. Compared to bipolars, FETs have-
a) high input impedance
b) low input impedance
c) same input impedance
d) none
Answer is :- high input impedance
15. The source-drain channel of JFET is -
a) ohmic
b) bilateral
c) unilateral
d) both a and b
Answer is :- both a and b
16. diac is equivalent to a -
a) Pair of SCRs
b) Pair of four layer SCRs
c) Diode and two resistors
d) Triac width
Answer is :- Pair of four layer SCRs
17. When a sample of N type semiconductor has electron density of 6.25 ´ 1011 /cm3 at 300K and if the intrinsic concentration of carriers in this sample is 2.5 ´ 1013/cm3 then the hole density will be –
a) 106/cm3
b) 103/ cm3
c) 1010/ cm3
d) 1012/ cm3
Answer is :- 103/ cm3
18. The statement ‘In any network of linear impedances, the current flowing at any point is equal to the algebraic sum of the currents caused to flow at that point by each of the sources of emf taken separately with all other emf’s reduced to zero’ represents -
a) Kirchhoff’s law
b) Norton’s theorem
c) Thevenin’s theorem
d) Superposition theorem
Answer is :- Superposition theorem
19. One of the following modes which has the characteristics of attenuation becoming less as the frequency is increased and is attractive at icrowave frequencies of circular cylindrical wave guides is –
a) TE1 mode
b) TM01 mode
c) TE01 mode
d) Higher order mode
Answer is :- TE01 mode
20. A two-port network is symmetrical if –
a) z11z22 – z12z21 = 1
b) h11h22 – h12h21 = 1
c) AD – BC = 1
d) y11y22 – y12y21 = 1
Answer is :-AD – BC = 1
21. For transmission line load matching over a range of frequencies, it is best to use a-
a) balun
b) broad band directional coupler
c) double stub
d) single stub of adjustable position
Answer is :- double stub
22. The poles and zeros of a driving point function of a network are simple and interlace on the negative real axis with a pole closest to the origin. It can be realised -
a) by an LC network
b) as an RC driving point impedance
c) as an RC driving point admittance
d) only by an RLC network
Answer is:- only by an RLC network
23. Poles and zeros of a driving point function of a network are simple and interlace on the jw axis. The network consists of elements –
a) R and C
b) L and C
c) R and L
d) R, L and C
Answer is :- L and C
24. For a two port reciprocal network, the output open circuit voltage divided by the input current is equal to –
a) B
b) Z12
c) —
d) h12
Answer is :- Z12
25. In a short electric doublet the radiation properties are so that-
a) The induction field diminishes as the square root of the distance and is only appreciable in the vicinity of the conductor.
b) In the radiation, magnetic field is minimum when the current is maximum.
c) The radiation resistance of a short doublet antenna is extremely high.
d) Mean rate of power through a unit area of spherical sphere surrounding this doublet is proportional to the square of the elemental length, other factors remaining constant.
Answer is :-Mean rate of power through a unit area of spherical sphere surrounding this doublet is proportional to the square of the elemental length, other factors remaining constant.
26. The frequency modulated (FM) radio frequency range is nearly -
a) 250 –300 MHz
b) 150 – 200 MHz
c) 90 – 105 MHz
d) 30-70 MHz
Answer is :-90 – 105 MHz
27. In an underground cable the distortion in the transmission of carrier frequency can be eliminated by using -
a) Inductive loading
b) Resistive loading
c) Capacitive loading
d) Shielding
Answer is :- Inductive loading
28. The characteristic impedance of a transmission line with inductance 0.294 mH /m and capacitance 60 pF/m is -
a) 49 W
b) 60 W
c) 70 W
d) 140 W
Answer is :- 70 W
30. For a quarter wavelength ideal transmission line of characteristic impedance 50 ohms and load impedance 100 ohms, the input impedance will be –
a) 25W
b) 50W
c) 100W
d) 150W
Answer is :- 25W
31. The depth of penetration or skin depth for an electromagnetic field of frequency ‘f’ in a conductor of resistivity r and permeability m is-
a) inversely proportional to r and f and directly proportional to m
b) directly proportional to r and inversely proportional to f and m
c) directly proportional to f and inversely proportional to r and m
d) inversely proportional to r and m and directly proportional to f
Answer is :- directly proportional to r and inversely proportional to f and m
32. When an antenna has a gain of 44dB then assuming that the main beam of the antenna is circular in cross-section the beam width will be -
a) 0.4456 0
b) 1.44560
c) 2.44560
d) 3.44560
Answer is :- 2.44560
33. Lens antennas used for microwaves are usually made of -
a) Polystyrene
b) Glass of low refractive index
c) Paraboloid surfaces
d) Dielectric media having large refractive index
Answer is :- Polystyrene
From Placement Papers, post BSNL JTO Exam paper
If you enjoyed this post, please consider to leave a comment or subscribe to the feed and get future articles delivered to your feed reader.
sir i need the oldpapers and model papers as well as the key of jto exams.which book i9 should prefer.
plz send me the papers on my email.
Excuse Me…
im from AP…Is there any coaching centers in HYDERABAD..Pls inform Me…
mam,plz tell me only that student who appeared in2008 or who also appeared in 2009
give jto test
sir, which book i have to refer for bsnl jto 2009 examination.?
Thanking you
hello everybody i am swathi and i am studyint b-tech final year in the specialization of information technology.i am preparing for jto 2009 jobs in bsnl . And i have some confusion to refer the book , let me know which book i have to prepare for this exam somebody please help me
dear sir
i have done B.E (ece)& i am preparing for bsnl jto exam 2009 sir can u send me the previous question papers
thank u sir,
dear sir
please send me the syllabus for B.Tech E.C.E student
dear sir
i am doing my b.tech final year ece student and i want to write JTO exam could u tell me any %per required for this exam and send me old papers with solutons & can u sugeest me hoe to get through the exam
dear sir
plz give the detail of syllabus & referance books for prepration of jto exam
Plz tell me how to get through this ezam and also send me old ouestions n solutions……and also tell the procedure after test.
thanks
sir can computer science engineers apply for bsnl exam?if v can apply then what are the sections that we would have to take in exam?what is the syllabus?
hallo iam preparing for jto 2009 pls help me
send me old and model papers
and some nice books for jto
thanks and regard
Rakesh kurre
rakesh_kurre@yahoo.co.in
i wanna know wheather the question papers for electrical ann communication will be same or different?/pkz give me the the information regarding this…
Hey.. friends , this june 21 i am going to sit for the JTO exam. Plz any one having previuos year question paper mail me.
kumar_neverland@rediffmail.com
Dear sir i am preparing for the BSNL JTO Exam 2009.
Sir Iam a B.Tech in electronics & communication. i am confused which book to be cosult.
please send me the book name which will help me the best.
Thanking in Anticipation.
my mail id:- ece1666@gmail.com
pls suggest me some gud books for bsnl jto exam from computer science
Dear sir
i am preparing for the bsnl jto exam 2009 sir i am Electronics and teleconmmunication student,sir can u send me the previous question papers ,and can u sugeest me how to get through the exam …………..
thanking u sir,
Ans: Please browse this website, it has previous papers as well as other usefull information.
dear sir/mam,
i am preparing for JTO 2009 ,can u give me previous question papers?
thanking you sir/mam
Hello sir,
I am final year ECE student.sir,i am preparing for the BSNL JTO Exam 2009. Sir, plz send me previous question papers with answer, and suggest me how should i do prepration for this.
I would also like to know by which month will the results be declared.
Thanking u sir.
Hello Sir.
I am preparing for jto entrance exam to be held on 21.6.2009.
I am an Electrical graduate.
Could you please refer books to be studied.
Thanking you.
Regards
sir ,i m last year e.c. engg. student than i would applicable for jto or not?
thanks for ur anticipation……
Sir,
Am a PG in Environmental Engineering ( Graduate in CIVIL Engineering).am preparing for JTO 2009 exams. Very intersted to join BSNL.Please suggest me which objective book to refer. Please send me previous years question papers.
Thanking u Sir,
Regards
A.Hemasuriya
hi
iam preparing for jto 2009,please send the paper of previos five yearin ece
plz send me all old question paper of JTO exam on my mail id
i want it imidiate plz