#1
6th August 2014, 03:48 PM
| |||
| |||
Bharat Sanchar Nigam Limited Telecom Technical Assistant eligibility criteria
I want to give the Bharat Sanchar Nigam Limited Telecom Technical Assistant and for that I want to get the details of Bharat Sanchar Nigam Limited Telecom Technical Assistant eligibility criteria so can you provide me that?
|
#2
7th August 2014, 09:33 AM
| |||
| |||
Re: Bharat Sanchar Nigam Limited Telecom Technical Assistant eligibility criteria
As you want to get the details of Bharat Sanchar Nigam Limited Telecom Technical Assistant eligibility criteria so here it is for you: Age You age should be in age bracket of 18yrs to 27yrs in order to apply. Age Grace will be provided to the candidates falling under the reserved categories, Educational Qualification: Candidates must have passed with a minimum of 60% marks in BE or BTech or equivalent Engineering Degree from any government affiliated institute. Candidates must have passed a course in Computer Science, Electronics, Electrical Engineering, Electronics and Communications streams -Whereas candidates who have pursued a course in CS or ICWA or CA streams can also apply Selection Process: Selection will be done on the basis of online test and a personal interview for selection. Exam pattern: The examination for the BSNL TTA posts is based on the objective type test which consists of multiple type questions. There are basically three parts: General Ability Test (20 marks) General Engineering (90 marks) Specialization (90 marks) respectively. The duration of the exam is 3 hours. Tentative Dates: Closing Date of recepit of application: mid of April,2014 Examination Date: first week of June 2014 Application procedure: Candidates can apply through both online and offline mode. Online mode: Download the application form and the brochure from the authorized website of the BSNL. The filled up application should be mailed to the office of the BSNL along with a DD of Rs. 500/-. (No fees are necessary for the SC/ST/OBC candidates). All the necessary documents should be attached with the form. Here for your reference I am giving you the previous year question papers of Bharat Sanchar Nigam Limited Telecom Technical Assistant: 1. In a D.C. generator, if the brushes are given a small amount of forward shift, the effect of armature is a. Totally demagnetizing b. Totally magnetizing c. Partly demagnetizing and partly cross magnetizing d. Totally cross magnetizing 2. The air gap between stator and armature of an electric motor is kept as small as possible a. To get a stronger magnetic field b. to improve the air circulation c. To reach the higher speed of rotation d. To make the rotation easier. 3. Two series motors are coupled. One motor runs as generator and other as motor. The friction losses of the two machines will be equal when a. Both operates at same voltage b. Both have same back emf c. Both have same speed d. both have same excitation 4. Plugging of D.C. motor is normally executed by a. Reversing the field polarity b. Reversing the armature polarity c. Reversing both the armature and field polarity d. Connecting a resistance across the armature. 5. Transformer oil transformer provides a. Insulation and cooling b. B. Cooling and lubrication c. Lubrication and insulation d. Insulation, cooling and lubrication 6. Leakage fluxes of transformer may be minimized by a. Reducing the magnetizing current to the minimum b. Reducing the reluctance of the iron core to the minimum c. Reducing the number of primary and secondary turn to the minimum d. Sectionalizing and interleaving the primary and secondary windings 7. Electric power is transformed upon one coil to other coil in a transformer a. Electrically b. Electro Magnetically c. Magnetically d. Physically 8. The most suitable and economical connection for small high voltage transformer is- a. Star- Delta connection b. Delta- Delta connection c. Delta- Star connection d. Star- Star connection 9. An alternator is said to be over excited when it is operating at a. Unity power factor b. Leading power factor c. Lagging power factor d. Either lagging or leading power factor 10. In an A.C. machine, the armature winding is kept stationary while the field winding is kept rotating for the following rason a. Armature handles very large currents and high voltages b. Armature friction involving deep slots to accommodate large coils is easy if armature is kept stationary c. Ease of cooling the stator than rotor d. None of the above. 11. In a synchronous motor, the torque angle is the a. Angle between the rotating stator flux and rotor poles b. Angle between the magnetizing current and back emf c. Angle between the supply voltage and back emf d. None of the above 12. A 3-phase synchronous motor is said to be “floating” when it operates a. On no load and without loss b. On constantly varying load c. On pulsating load d. On high load and variable supply voltage 13. Speed of synchronous motor depends upon a. Number of poles b. Supply frequency c. Both (a) and (b) d. Neither (a) nor (b) 14. Imbalance in the shaft of an induction motor occurs due to a. Slip rings b. Overheating of winding c. Non uniform of air gap d. Rigid consturcion 15. Squirrel cage induction motor has a. Zero starting torque b. Very small starting torque c. Medium starting torque d. Very high starting torque 16. The principle of operation of a 3-phase induction motor is similar to that of a a. Synchronous motor b. Repulsion – start induction motor c. Transformer with a shorted secondary d. Capacitor – start, induction – run motor 17. The speed/load characteristics of a universal motor are similar to those a. D.C. shunt motor b. D.C. series motor c. A.C. motor d. None of the above 18. Single phase A.C. motor generally used for vacuum cleaners is a. Universal motor b. Repulsion motor c. Hysteresis motor d. Reluctance motor 19. Buchholz relay is used for the protection of a. Switch yard b. Transformers c. Alternators d. Transmission lines 20. The type of braking used in traction system is a. Mechanical braking b. Electro – pneumatic braking c. Vacuum braking system d. All the above 21. The function of processing zenger diode in a UJT circuit used for triggering of SCRs is to a. Expedite the generation of triggering pulses b. Delay the generation of triggering pulses c. Provide a constant voltage to UJT to prevent erratic firing d. Provide a variable voltage to UJT as the source voltage changes 22. The frequency of a ripple in the output voltage of a 3 – phase semi converter depends upon a. Firing angle and load resistance b. Firing angle and supply frequency c. Firing angle and load inductance d. Only on load circuit parameters 23. The SCR is turned off when the anode currents falls below a. Forward current rating b. Break – over voltage c. Holding current d. Latching 24. V4 characteristics of emitter of a UJT is a. Similar to CE with linear and saturation region b. Similar to FET with a linear and pinch of region c. Similar to tunnel diode in some respects d. Linear between the peak point and valley point 25. A transformer works on a. DC b. AC c. AC & DC both d. Neither AC not DC 26. Which of the following device is used in transformer? a. Tube light b. Electric heater c. Mobile phone d. Rectifier module 27. Earth electrodes can be in the form of a. rods or piper b. stripes c. plates d. any of above 28. Carbone or metal brushes are used in a. DC generators only b. AC generators only c. Both AC & DC generation d. None of above 29. Energy is lost due to Joule’s heating effects in winding of transformer. This is called a. Copper loss b. Eddy current loss c. Flux loss d. None 30. In refrigeration cycle heat is lost in a. Cooling coil b. Condenser c. Compressor d. Expansion valve 31. The power factor of AC circuit is a. R/X b. R/Z c. Z/R d. Zero 32. Silicon controlled output is good if ripple factor is a. Switch b. Transformer c. Amplifier d. None of above 33. The rectifier output is good if ripple factor is a. More b. Less c. Constant d. None of above 34. Protective relays can monitor large AC current by means of a. Current transformer b. Potential transformer c. Micro transformer d. None of above 35. The combines AM of two similar batteries connected in parallel is: a. halved b. doubled c. remain constant d. none of above 36. The current in circuit having 5 V EMI source and 10 Ohm resistance is: a. 2 Amp b. 50 Amp c. 5 Amp d. ½ Amp 37. The chopper is a device to change a. Voltage b. Current c. Frequency d. None of these 38. The power consumption, in case of centrifugal loads (like pump, fan, blower etc) is proportional to: a. speed b. square of speed c. cube of speed d. none of these 39. Which of these need to be measured after rewinding the motor: a. no load current b. air gap c. winding resistance d. all of the above 40. Five percent increase in supply frequency will change the synchronous speed of motor by: a. -5% b. +5% c. -10% d. +10% 41. Which of the following is the best inverter? a. square wave inverter b. sine wave inverter c. pure sine wave inverter d. triangular wave inverter 42. For driving a motor in a tape recorder or record player, the motor used is generally: a. a synchronous motor b. a hydraulic motor c. an induction motor d. a dc series motor 43. The DC motor starter used with a constant speed shunt motor is: a. 2 point starter b. 3 point starter c. 4 point starter d. 5 point starter 44. A commutator in a DC motor converts a. AC to DC b. DC to AC c. Both AC to DC and DC to AC d. None of these 45. Two transformers running in parallel will share the load according to their: a. leakage reactance b. pu impedance c. efficiency d. rating 46. The size of the Earth Wire is determined by: a. the ampere capacity of the service wires b. the atmospheric conditions c. the voltage of service wires d. none of these 47. The function of lightning arrester is: a. to limit the short circuit fault current b. to provide path to high voltage surge to earth c. to reduce arcing d. none of these 48. Surge protector provide: a. high impedance to normal voltage b. low impedance to surge c. both (a) and (b) d. none of these 49. Earthing is necessary to give protection against a. voltage fluctuation b. overloading c. danger of electric shock d. high temperature of conductors 50. The primary function of fuse is to a. protect the appliance b. open the circuit c. prevent excessive current d. protect the line |