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July 9th, 2016, 03:19 PM
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Re: BSNL TTA Online Test Paper

Hey , as per your request iam here giving you sample test paper for BSNL Telecom Technical Assistant (TTA) recruitment exam.

BSNL TTA Exam Paper:

Question 1. A rectangle has width a and length b. If the width is decreased by 20% and the length is increased by 10%, what is the new area of the rectangle?

a) 0.9 ab

b) 0.92 ab

c) 0.74 ab

d) None of the above

Answer: None of the above

Question 2. Two men, Mohit and Neerej started walking towards each other, simultaneously from places P and Q respectively, which are 72 miles apart. They met after 6 hours. After their meeting, Mohit reduced his speed by 1 mile/h and Neerej increased by 1 mile/h. They arrived at Q and P respectively at the same time. Find their initial speeds :

a) 6 ½ miles/h and 7½ miles/h

b) 6 miles/h and 7 miles/h

c) 6.5 miles/h and 5.5 miles/h

d) 15 ½ miles/h and 9 miles/h

Answer: 6.5 miles/h and 5.5 miles/h

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Question 3. Answer the questions on the basis of information giver below. Six persons A, B, C, D, E and F are photographer, engineer, lawyer, housewife, waiter and journalist, not necessarily in that order. There are two married couples in the group who stay together
A is married and his wife is a housewife.
B, the lawyer is married to the photographer sister of A.
D is the brother of C, who is not the housewife.
E, the journalist has taken a vow of never getting married.
The waiter is engaged to his girlfriend.

Who is the wife of B?

a) E

b) F

c) D

d) C

Answer: C

Question 4. By which of these nicknames is Nagpur also known as?

a) Diamond City

b) Orange City

c) Pink City

d) City of Lakes

Answer: Orange City

Question 5. Which of these is a traditional Sikh Maritial Art named after a stick used to practice sword fighting?

a) Gatka

b) Hola Mohalla

c) Shakhl

d) Kakaar

Answer: Gatka

Question 6. Maulana Abul Kalam Azad’s Birthday on 11 November is celebrated in India as what?

a) National Education Day

b) National Integration Day

c) National Minority Day

d) National Sports Day

Answer: National Education Day

Question 7. When lines intersect on a drawing at angles of this many degrees, it is customary not to dimension the angle:

a) 360

b) 180

c) 90

d) 45

Answer: 90

Question 8. At which of the following places Diesel Component Works is established?

a) Jamshedpur

b) Patiala

c) Perambur

d) Varanasi

Answer: Patiala

the Mount Everest some time back was headed by

a) Sqn. Ldr. D. Panda

b) Sqn. Ldr. Nirupama Pandey

c) Flt. Lt. Nivedita Choudhary

d) Flt. Lt. Rajika Sharma

Answer: Sqn. Ldr. Nirupama Pandey

Question 10. When was the Indian Constitution adopted?

a) 15th August, 1947

b) 26th November, 1949

c) 26th January, 1950

d) 2nd October, 1952

Answer: 26th November, 1949

Here is the attachment.


Question .1 A house served by a 220V supply light, is protected by a 9-Ampere fuse. The maximum number of 60 W bulbs in parallel that can be turned on is

(a) 11

(b) 33

(c) 22

(d) 44

Answer: B

Question.2 A capacitor of 1 Q.4 μF initially charged to 10 V is connected across an ideal inductor of 0.1 mH. The maximum current in the circuit is

(a) 0.5 A

(b) 1 A

(c) 1.5 A

(d) 2 A

Answer: B

Question.3 An n-channel JFET has I Q.2 DSS = 1 μA & VP =–5V. The maximum trans conductance is

(a) gm = 0.4 milli mho

(b) gm = 0.04milli mho

(c) gm = 0.04 mho

(d) gm = 0.4 millimilli mho

Answer: D

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Question.4 Silicon has a preference in IC technology because Q.5

(a) it is an indirect semiconductor

(b) it is a covalent semiconductor

(c) it is an elemental semiconductor

(d) of the availability of nature oxide SiO

Answer: D

Question.5 An analog voltmeter has a sensitivity of 10kΩ/volt. The galvanometer used in constructing the instrument will produce a full scale deflection when the current passed through it is

(a) 10 mA

(b) 20 mA

(c) 50 mA

(d) 100 μA

Answer: D

Question.6 The base to base resistance of a UJT is 6 K Ohm when the emitter current is zero. If B1 R = 3.6 K Ohm, the intrinsic stand off ratio is

(a) n = 0.66

(b) n = 0.6

(c) n = 6.0

(d) n = 3.6

Answer: B

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Question.7 Transient signals can be observed using

(a) storage oscillocope

(b) sampling oscilloscope

(c) wave analyzer

(d) spectrum analayzer

Answer: A

Question.8 A power diode has lightly doped n type substrate sandwiched between heavily doped p and n regions

(a) to increase reverse breakdown voltage

(b) to reduce ohmic loss under forward bias

(c) to decrease switching time of the power diode

(d) to improve transient behaviour of the diode

Answer: D

Question.9 A P-controller is used to adjust the outer level of a tank in range of (0-10)m. The desired level is 5 m. The controller should fully close the valve, if level rises to 5.5 m and it should fully open the valve, if level falls to 4.5 m. What should be the % P-band?

(a) 1

(b) 5

(c) 7

(d) 10

Answer: D

Question.10 Some system architects do not find RISC instruction repertoire to be cost-effective because it

(a) result in large increase in programme size

(b) result in complex structure of microcode

(c) has been observed that an average compiler does not employ more than a limited subset of available instructions

(d) results in complex decoding of opcode filed resulting in longer execution time

Answer: A

Question.11 What addressing mode is used in the instruction RET?

(a) Direct

(b) Immediate

(c) Implicit

(d) Register-indirect

Answer: D

Question.12 The speed of an audio cassette tape in a cassette player is 5cm/ sec. If the maximum frequency that needs to be recorded is 20 KHz, the minimum spatial wavelength on the tape is

(a) 40 μm

(b) 25 μm

(c) 4 μm

(d) 2.5 μm

Answer: D

Question.13 In order to generate electron-hole pairs, the maximum wavelength of radiation for Silicon (Band gap = 1.1 eV) is

(a) 1.88 μm

(b) 1.68 μm

(c) 1.13 μm

(d) 1.54 μm

Answer: C

Question.14 Which of the following pairs of crystal structure possesses the same atomic packing density?

(a) simple cubic & body centred cubic

(b) body centred cubic & face centred cubic

(c) face centered cubic & hexagonal close packed

(d) body centred cubic & hexagonal close packed

Answer: C

Question.15 In a power transformer, the fundamental frequency of the hum arising due to magnetostriction is

(a) equal to the line frequecy

(b) double the line frequency

(c) 4 times the line frequency

(d) not related to the line frequency

Answer: B

Question.16 The polar bonds existing in III-V compound semicondutor, may be considered as equivalent to

(a) 1 ionic bond and 3 covalent bonds

(b) 1 ionic bond and 4 covalent bonds

(c) 2 ionic bonds and 2 covalent bonds

(d) 2 ionic bonds and 4 covalent bonds

Answer: A

Question.17 In a regenerative braking, which of the following is generally true?

(a) Back e.m.f. in the motor exceeds the applied voltage

(b) Back e.m.f. is less than the applied voltage

(c) Kinetic energy of the motor is dissipated in a resistance

(d) Kinetic energy of the motor is dissipated through free wheeling diode across the motor

Answer: A

Question.18 To distinguish between signals having very close values, we need

an instrument with

(a) high accuracy

(b) high resolution

(c) high sensitivity

(d) high linearity

Answer: B

Question.19 The trace on an oscilloscope continually moves to the right of the screen when

(a) the sweep is triggered.

(b) the sweep period is larger than the signal period.

(c) the sweep period is smaller than the signal period.

(d) there is no weep.

Answer: B

Question.20 An optical fiber cable laid underground has developed a discontinuity at a distance d from the source end. The fault can be located using the instrument

(a) Optical spectrum Analyzer (OSA)

(b) Optical Time Domain Reflectometer (OTDR)

(c) Optical Power Meter (OPM)

(d) Laser Diffractometer (LD)

Answer: B

Question.21 By which of these nicknames is Nagpur also known as?

(a) Diamond City

(b) Orange City

(c) Pink City

(d) City of Lakes

Answer: B

Question.22 Which of these is a traditional Sikh Maritial Art named after a stick used to practice sword fighting?

(a) Gatka

(b) Hola Mohalla

(c) Shakhl

(d) Kakaar

Answer: A

Question.23 Maulana Abul Kalam Azad’s Birthday on 11 November is celebrated in India as what?

(a) National Education Day

(b) National Integration Day

(c) National Minority Day

(d) National Sports Day

Answer: A

Question.24 At which of the following places Diesel Component Works is established?

(a) Jamshedpur

(b) Patiala

(c) Perambur

(d) Varanasi

Answer: B

Question 25. The All Women Expedition Team of the Indian Air Force which scaled the Mount Everest some time back was headed by

(a) Sqn. Ldr. D. Panda

(b) Sqn. Ldr. Nirupama Pandey

(c) Flt. Lt. Nivedita Choudhary

(d) Flt. Lt. Rajika Sharma

Answer: B

Question.26 The zero flag of 8085 microprocessor is to be set keeping the content of the accumulator unchanged. Which instruction is to be used?

(a) MOV A,A

(b) ANI 00H

(c) XRA A

(d) CMP A

Answer: D

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Question.27 To establish a communication between 8085 microprocessor and 8255 Programmable Peripheral Interface chip. The status of the chip select input would be

(a) TRISTATE

(b) HIGH

(c) LOW

(d) DON’T CARE

Answer: C

Question.28 Which flag does not change by the execution of the instruction DCR B in 8085 microprocessor ?

(a) Parity

(b) Carry

(c) Zero

(d) Sign

Answer: B

Question.29 Suppose that data items, numbered 1, 2, 3, 4, 5 and 6 come in the input stream in this order. By using a queue, which of the following rearrangement can be obtained in the output order ?

(a) 1 2 6 4 5 3

(b) 2 4 3 6 5 1

(c) 4 2 1 3 5 6

(d) 1 2 3 4 5 6

Answer: D

Question.30 For an antenna to be frequency-independent, it should expand or contract in proportion to the

(a) gain

(b) directivity

(c) wavelength

(d) impedance

Answer: D


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