BSNL JTO Exam paper
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34. One of the following types of instrument which is an electrometer is -
a) Electrodynamometer
b) PMMC
c) Electrostatic
d) Moving iron
Answer is :- Electrostatic
35. When an ac current of 5A and dc current of 5A flow simultaneously through a circuit then which of the following statement is true ?
a) An ac ammeter will read less than 10A but more than 5A
b) An ac ammeter will read only 5A
c) A dc ammeter will read 10A
d) A dc ammeter will read zero
Answer is :- An ac ammeter will read less than 10A but more than 5A
36. When Q factor of a circuit is high, then -
a) power factor of the circuit is high
b) impedance of the circuit is high
c) bandwidth is large
d) none of these
Answer is :- none of these
37. The resolution of a logic analyser is -
a) the maximum number of input channels
b) the minimum duration of the glitch it can capture
c) it’s internal clock period
d) the minimum amplitude of input signal it can display
Answer is :- the minimum amplitude of input signal it can display
38. A memoryless system is –
a) causal
b) not causal
c) nothing can be said
d) none
Answer is :- causal
39. An air capacitor is a –
a) time variant
b) active device
c) time invariant
d) time invariant and passive device
Answer is :-time invariant and passive device
40. Thermistors are made of -
a) pure metals
b) pure insulators
c) sintered mixtures of metallic oxides
d) pure semiconductor
Answer is :- sintered mixtures of metallic oxides
41. Pirani gauge is used to measure –
a) very low pressures
b) high pressures
c) pressures in the region of 1 atm
d) fluid flow
Answer is :- very low pressures
42. These circuits converts input power at one frequency to output power at a different frequency through one stage conversion –
a) AC voltage controllers
b) Cyclo converters
c) Phase controlled rectifiers
d) Inverters
Answer is :-Cyclo converters
43. In a forward voltage Triggering thyristor changes from –
a) off state to on state
b) on state to off state
c) on state to on state
d) off state to off state
Answer is :- off state to on state
44. A thyristor, when triggered, will change from forward blocking state to conduction state if its anode to cathode voltage is equal to -
a) peak repetitive off state forward voltage
b) peak working off state forward voltage
c) peak working off state reverse voltage
d) peak non-repetitive off state forward voltage
Answer is :- peak working off state forward voltage
45. Gate characteristic of a thyristor-
a) is a straight line passing through origin
b) is of the type Vg = a + bIg
c) is a curve between Vg and Ig
d) has a spread between two curves of Vg – Ig
Answer is :-has a spread between two curves of Vg – Ig
46. A four quadrant operation requires-
a) two full converters in series
b) two full converters connected back to back
c) two full converters connected in parallel
d) two semi converters connected back to back
Answer is :-two full converters connected back to back
47. If for a single phase half bridge inverter, the amplitude of output voltage is Vs and the output power is P, then their corresponding values for a single phase full bridge inverter are –
a) Vs, P
b) Vs/2, P
c) 2Vs, 2P
d) 2Vs, P
Answer is :- 2Vs, 2P
48. In an enhancement type MOSFET the output V-I characteristics has –
a) only an ohmic region
b) only a saturation region
c) only ohmic region at 10 W voltage value followed by a saturation region at higher voltages
d)an ohmic region at large voltage values preceded by a saturation region at lower voltages
Answer is :- only ohmic region at 10 W voltage value followed by a saturation region at higher voltages
49. The energy gap in a semiconductor -
a) increases with temperature
b) remains constant
c) slightly increase with temperature
d) decrease with temperature
Answer is :-decrease with temperature
50. In an electronic circuit matching means -
a) connecting a high impedance directly to low impedance
b) selection of components which are compatible
c) transferring maximum amount of signal between different kinds of circuits.
d) RC coupled stages
Answer is :-transferring maximum amount of signal between different kinds of circuits.
51. P channel FETs are less superior than N channel FETs because
a) They have higher input impedance
b) They have high switching time
c) They consume less power
d) Mobility of electrons is greater than that of holes
Answer is :- Mobility of electrons is greater than that of holes
52. Small increase in temperature in the CE connected transistor is the -
a) Increase in ICEO
b) Increase in ac current gain
c) Decrease in ac current gain
d) Increase in output resistance
Answer is :- Increase in ICEO
53. An amplifier has a band width of 20 KHz and a midband gain of 50 without feedback. If a negative feedback of 1% is applied then bandwidth with feedback is -
a) 13. 3 KHz
b) 30KHz
c) 10KHz
d) 40KHz
Answer is :- 30KHz
54. The output of a class B amplifier -
a) is distortion free
b) consists of positive half cycles only
c) is like the output of a full wave rectifier
d) comprises short duration current pulses
Answer is :- consists of positive half cycles only
55. An amplifier with negative feedback -
a) lowers its lower 3 dB frequency
b) raises its upper 3 dB frequency
c) increases its bandwidth
d) all of the above
Answer is :- all of the above
56. What changes would be necessary in block C if FM signals are to be received -
a) Block becomes redundant
b) A FM detector would be required
c) A high frequency signal generator
1d) An additional local oscillator will be needed
Answer is :- A FM detector would be required
57. The main disadvantage of Diode-Transistor logic (DTL) is its-
a) greater speed
b) slower speed
c) average speed
d) none of the above
Answer is :- slower speed
58. Time delay Dt in digital signals in an SIS O shift register is given by –
a) Dt = N ´ Fc
b) Dt = N ´ 1/Fc
c) Dt = 1/N ´ Fc
d) Dt = N ¸ 1/Fc
Answer is :- Dt = N ´ 1/Fc
59. The output Qn is 1 in a JK flip flop and it does not change when clock pulse is applied) The possible combination of Jn and Kn can be –
(y denotes don’t care)
a) y and 0
b) y and 1
c) 0 and y
d) 1 and y
Answer is :- y and 0
60. Basic memory cell of dynamic RAM consists of –
a) a flip flop
b) a transistor acting as a capacitor
c) a transistor
d) a capacitance
Answer is :- a transistor acting as a capacitor
61. The 2’s complement of 10002 is –
a) 0111
b) 0101
c) 1000
d) 0001
Answer is :-1000
62. Master slave flip-flop is made up of –
a) two flip flops connected in series
b) two flip flops connected in parallel
c) a debouncer circuit
d) a-D- latch
Answer is :-two flip flops connected in series
63. Number of nybbles making one byte is –
a) 2
b) 4
c) 8
d) 16
Answer is :- 2
64. The intrinsic impedance of free space-
a) is independent of frequency
b) decreases with increase of frequency
c) increases with increase of frequency
d) varies as square root of frequency
Answer is :-is independent of frequency
65. A system consists of 12 poles and 2 zeroes. Its high frequency asymptote in its magnitude plot has a slope of -
a) –200 dB/decade
b) –240 dB/decade
c) –230 dB/decade
d) –320 dB/decade
Answer is :- –200 dB/decade
66. Considering the conditions-
1. High loop gain 2. Less ringing 3. Greater damping 4 Negative dB gain margin
System stability requirements would include?
a) 1 and 3
b) 1, 2 and 3
c) 1 and 4
d) 2, 3 and 4
Answer is :-2, 3 and 4
From Placement Papers, post BSNL JTO Exam paper
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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