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8th October 2014, 09:44 AM
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Join Date: Apr 2013
Re: Question paper of BSNL JTO

BSNL or Bharat Sanchar Nigam Limited recruits every year JTOs exam basically in three major categories, Telecom, Civil and Electrical.
This exam usually held in the last week of June.

You want previous year BSNL JTO question paper of Electrical Engineering so here I am giving you same:

Electrical Engineering
SECTION-I
QUESTION NUMBER 1-20
CARRY 1 MARK EACH

1. The main scale of a vernier calliper is ruled in
1 mm units. The vernier scale is 49 mm long
and divided in 50 units. The resolution of the
vernier calliper is
a. 0.002 mm
b. 0.005 mm
c. 0.01 mm
d. 0.02 mm

2. A frequency counter with a gating time of 50
ms counts 1254 cycles of an input square
wave. The frequency of the input wave is
a. 39.87 Hz
b. 62.70 Hz
c. 1.254 kHz
d. 25.08 kHz

3. A data acquisition system with the input range
of ± 5.0 V has a 12-bit ADC in it. The
resolution of the system is approximately
a. 0.24 mV
b. 0.48 mV
c. 1.22 mV
d. 2.44 mV

4. Wattmeters are based on the principle of
a. permanent magnet moving coil meter
b. electrodynamic meter
c. electrostatic meter
d. moving iron meter

5. The resolution of a Gray-coded optical shaft
encoder with 10-bit output is approximately
a. 0.098°
b. 0.176°
c. 0.225°
d. 0.352°
6. If y(t)  Y(s) indicates a Laplace transform
pair, then y(t) for t0 when

2 3 3
2 3
s e Y s
s s


7. The undamped natural frequency in rad/s and
the damping ratio of the system with the transfer function  
2
2
64
12 100
s G s
s s


 
are,
respectively,
a. 10 and 1.2
b. 10 and 0.6
c. 8 and 1.2
d. 8 and 0.75

8. The gain at the breakaway point of the root
locus along the real axis of a unity feedback
system with the transfer function
2 1
K G s
s s

is
a. K = 0
b. K = 0.5
c. K = 1
d. K = 1.25

9. Gain margin of the unity feedback system with
the loop transfer function
3
100
1
G s
s

is
a. 35.35
b. 12.5
c. 0.08
d. 0.03

10. The discrete time system with the transfer
function   3 2
1
0.4 0.25 0.1
G z
z z z

is
a. stable
b. unstable
c. marginally stable
d. sustained oscillatory

For full question paper I am uploading a pdf file it is free to download:
Attached Files
File Type: pdf BSNL JTO Electrical Engineering Question Paper.pdf (168.0 KB, 100 views)


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