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2nd March 2016, 11:12 AM
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Re: Previous Question Papers of BSNL JTO Exam

Hell sir, I am Mayank. I am from Delhi. I am preparing for BSNL JTO exam. Can you help me by providing me with the Previous Question Papers of BSNL JTO Exam?
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2nd March 2016, 11:13 AM
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Join Date: May 2012
Re: Previous Question Papers of BSNL JTO Exam

As you have asked about the previous questionpaper of BSNL JTO, check below for the information
1. When a inductive coil connected to a 200 V, 50Hz ac supply with 10A current flowing through it
dissipates 1000 watts then which of the following will have least value in ohms-a.) Resistance b.)
Reactance c.) Impedance d.) None
2 Oscillator crystal are made of – a.) Silicon b.) Germanium c.) Quartz d.) None
3. For small size, high frequency coils, the most common core material is
a.)Air b. )Ferritec.) Powdered ion d.) Steel
1. 4. If we have a parallel plate capacitor of plate area 'A' and plate separatoin t and having a
capacity C and a metallic plate r of area A and of negligible thickness is introduced in the capacitor at
a distance from either of the two plates as shown in the given figure then the capacity of the capacitor
will become – a.) b.)C c.)2C d.)4C
2. 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 di-magnetic susceptibility d.)A perfect conductor which becomes resistance when the current
density through it exceeds a critical value
_ .6. When an inductor tunes at 200 KHz with 624 pF capacitor and at 600 KHz with 60.4
_ .pF capacitor then the self capacitance of the inductor would be – a)8.05 pF b)10.05pF c.)16.01pF
d.)20.01pF
3. 7. Sparking occur when a load is switched off because the circuit has high –
a.)Inductance
b.)Capacitance
c.)Resistance
d.)None
4. 8. Sparking between contacts can be reduced by inserting a –
a.)Resistance in the line
b.)Capacitor in series with contacts
c.)Capacitor in parallel with contacts
d.)None
5. 9. RF amplifier of an A.M. receiver is normally biased in –
a.)Class 'A'
b.)Class 'b'
c.)Class 'C'
d.)None
6. 10. The value of gate voltage for the operation of enhancement of only N channel MOSFET
has to be –
a.)High positive
b.)High negative
c.)Low positive
d.)Zero
7. 11. The input gate current of a FET is –
a.)a few microamperes
b.)negligibly small
c.)a few milliamperes
d.)a few amperes
8. 12. In the following fig. with R = 30k, the value of current through 2 K resistor is –
a.)25 mA
b.)40 mA
c.)25/16 mA
d.)10 mA
_ .13. A step recovery diode –
a.)has on extremely short recovery time
b.)conducts equally well in both directions
_ .c.)is mainly used as a harmonic generator d.)is an ideal rectifiers of high frequency signals
9. 14. In order to get maximum undistorted output signal from CE amplifier with VCC 10V, the
value of VCE (Q) should be approximately-a.)0.1V b.)5V c.)10V d) V
10. 15. In a FET the electrode, which corresponds to collector in bipolar transistor, is – a.)source
b.)drain c.)gate d.)none
11. 16. The device which acts like an NPN and a PNP transistor connected base to base and
emitter to collector is – a.)Triac b.)UJT c.)Diac d.)SCR
12. 17. A typical optical fibre has – a.)High refractive index core and low refractive index
cladding b.)Low refractive index core and high refractive index cladding c.)Both a and b d.)None
13. 18. In the following figure circuit diagram of an op-amp based is shown. The ratio is equal to
– a.)9 b.)11 c.)10 d.)21
14. 19. When a loud speaker is connected across the terminals A and B of the network shown in
the fig. then its impedance to obtain maximum power dissipation in it will be – a.)3 – j1 b.)3 + j9
c.)7.5 + j 2.5 d.)7.5 – j 2.5 BSNL Recruitment Exam Question Paper with sample aptitude /
reasoning / technical questions free download here. Answers key / solutions coming shortly!
_ .20. In the lattice network, the value of R for the maximum power transfer to the load – a.)5
_ .b.)6.5 c.)8 d.)9


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