Telecommunications engineering is a subfield of electronics engineering which seeks to design and devise systems of communication at a distance. The work ranges from basic circuit design to strategic mass developments. (Source: Wikipedia)

Telecommunication Engineering students learn about the planning, design, implementation, management and maintenance of telecommunication systems and networks. They also do hands-on work with the latest hardware and software.

Electrical Engineering (Telecom)/ Telecommunication Engineering Practice Test Questions

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25 Questions

1. Regenerative repeaters are placed along the communication path to control:

FrequencyPowerAmplitude Noise

2. A lamp of 100W at 200V is supplied current at 100 volts. It will be equivalent to the lamp of: (900 Primary - V 100)

40W25W10W 50W

3. Mathematically, what is a differential?

A technique used for mathematical modeling.A method of directly relating how changes in a dependent variable affect changes in an independent variable.A method of directly relating how changes in an independent variable affect changes in a dependent variable.None of these

4. A 1000W heater is rated to operate at a direct current (DC) of 10A. If the heater is supplied alternating current (AC) for producing the same quantity of heat the value of current should be

Irms=10√2A Iav=10AIpeak=10AIrms=10A

5. The work done by the force F = 4ax - 3ay + 2az N in giving a 1 nC charge a displacement of 10ax + 2ay - 7az m is:

60 nJ20 nJ 103 nJ4 nJ

6. As we know when there is a joint in optical fiber then there will be some loss then this loss be minimized by

Both (a)and (b)Using index matching fluid in the gapMaking V-grooved splicingMaking carefully polishing

7. Which cable connects the subscriber telephone to the nearest end office in the local loop.

Twisted-pairFiber-opticFiber-optic / Twisted-pairCoaxial

8. In which layer Telnet and FTP works?"

PhysicalNetworkSessionApplication

9. Unlike coax and twisted pair, optical fibers are immune to

Electromagnetic interference Power lossHigh-frequency transmissionSignal attenuation

10. Which losses in a transformer varies significantly with load

Copper lossesCore losses 22.Eddy current lossesHysteresis losses

11. The maximum current will pass through

InductanceCapacitanceNone of these Resistance

12. Which of these materials requires the least value of magnetic field strength to magnetize it?

NickelTungstenSilverSodium chloride

13. At Service provider end IMEI number of MS is basically stored in:

HLREIR AUCVLR

14. What type of communication use Radio waves:

UnicastNone of these Both (a) and (c) can be usedMulticast

15. Normally, the FPGA resources are used less than 70% because:

Power issuesRouting becomes excessively complicatedSimulation time increasesClock frequency

16. An element which consumes energy instead of storing in it is

ResistorCapacitorInductorConductor

17. Radio frequency ranges from 30MHz to 1GHz and it is suitable for:

Omni directional transmissionLocal point to point transmissionNone of these Point to point transmission

18. Fast fading occurs if the channel____________ changes rapidly within the symbol duration.

FrequencyImpulse responseBandwidthNone of these

19. An antenna located in a city is a source of radio waves. How much time does it take the wave to reach a town 12,000 km away from the city?

40 ms20 ms20 us36 s

20. A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed.

The circuit will become unstableThe voltage gain will decreaseThe voltage gain will increaseThe circuit will become stable

21. To correct two bit errors the relationship between minimum hamming distance (dmin) and errors should be

dmin=2dmindmin=1dmin>2

22. Where the poles should be placed on the unit circle for stable filter?

both a & bInsideOutsideNone of these

23. The root locus of a unity feed function is given by:

k(s+2) / s(s+1)k/s(s+1)(s+2)ks / (s+1) (s+2)k(s+1)/s(s+2)

24. To create a null in the frequency response of a filter at a frequency, what will be introduced on the unit circle at an angle.

PolesNothing will be introducedBoth a & bZeros

25. Consider the circuit shown in the given figure. For maximum power transfer to the load, the primary to secondary turn’s ratio must be

3 : 11 : 39 : 11 : 9