Preparation tips for National Thermal Power Corporation Limited exam

I want to give the National Thermal Power Corporation Limited exam and for that I want to get the Preparation tips for National Thermal Power Corporation Limited exam so can you provide me that?

[Kiran Chandar]

As you want to get the preparation tips for National Thermal Power Corporation Limited exam so here it is for you:

Candidates must have knowledge of syllabus and the exam pattern

Candidates must have to give at least 6 to 8 hours per day for studies

Candidates must solve previous year question papers as much as they can

Candidates must buy reference books

Candidates must make notes of important topics

Here for your reference I am giving you the previous year question papers of National Thermal Power Corporation Limited exam:

1. What is causal system?
2. Shunt reactor is used in EHV transmission line for
3. 20w, 40W, & 200w lamps are connected to three phases if neutral wire breaks then
which lamp will fuse first? 1) 20 2)40 3)200 three lamps will fuse together.
4. Synchronous machine can be operated at both lagging and leading power factor
5 What does synchronous speed mean?
6. Frequency of emf generated per rotation of rotor is equal to.
7. DC machine having wave winding is wounded as lap winding what will be the effect
on emf generated
8 Which is remain unchanged in transformer action?
9. In transformer windings are connected.?
10. In general how transformer is rated?
11. What is given on the name plate of motor? 1) KW 2) KVA 3) output shaft power
12. Short circuit test of transformer gives what?
13. Transformer core are laminated for what purpose?
14. What is supply voltage for heavy industry .1) 33KV 2) 11KV 3) 132 KV 4) 66KV
15. Basic structure SCR as a two transistor i.e. how they are connected?
16. What is Triac?
17. System admittance is (G+jB) what is reactive power absorbed if the voltage is V KV?
(1) V (square)*B (2) V (square)*g .
18. In series R-L circuit what is phase difference between the voltage drop across R and
L?
19. Power factor is cosine (delta ) delta is the angle between 1) phase voltage phase
current 2)
Line voltage lone current 3) phase voltage line current 4) line voltage phase current.
20. Laplace of exp (-at)?
21. For series R-L-C circuit the load will be capacitive if the frequency is 1) greater than
the resonant frequency 2) less than the resonant frequency 3).
22. In Wiens bridge which circuit elements determine the frequency range?
23. What is the output if two booster having duty cycle K and (K-1) are connected in
series?
24. If a DC shunt motor is loaded from unloaded condition what will be effect of on
terminal voltage?
25. A second wire system having one pole one right half of the s-plane. When the system
will be stable?
26. A system having repetitive pole what will be effect on the gain at the cross over
frequency?
27. Hollow conductor is used to reduce corona loss how does it reduce the loss?
28. In DC machine how voltage is related to flux?
29. Nature of current and voltage in the armature and at the terminal in DC machine.
30. Motor acts on the principle of ..rule
31. Which instrument measure both ac and dc?
32. How the rotation of induction motor is reversed?
33. If 3-phaseof a 3- phase balance load are reversed what will be the effect on the line
current?
34. If the rating of VAR absorber is 50MVAR at 400KV. What will the VAR absorbed
by the absorber at 300KV?
35. In regenerative breaking of DC series motor what is done?
36. Definitions of Fourier transform?
37. Laplace of f(t) is F(S) what is Laplace of f(t+T) .
38. Z-transform of sampled function x(n) for n>0.
39. Laplace transform of impulse function.
40. Z-transform of unity.
41. How many slip rings are there in 3phase synchronous motor?
42. How the speed of synchronous motor is controlled?
43. Speed control of induction motor?
44. When power supply is supplied to heater coil it glows while simple wire does not
glow. Why?
45. A synchronous generator having inertia constant 4 and having rating of 100MVA.
What will be energy stored by the machine?
46. A transformer having ratio 20:1. The secondary load is 0.6 ohm and the voltage
across it is 6 V what will be the primary current?
47. A RC circuit having r=0.8ohm, c=2.5micofarad what will be the time constant?
48. Find load impedance if c=0.1 micro farad?
49. Two capacitors connected in series the equivalent capacitance is 0.03uf and when
connected in parallel the equivalent capacitance is 0.16uf find out the ratio of the two
capacitance?
50. An L-c circuit having frequency 1/sqrt (LC) what will the equivalent impedance?
51. An inverting op-am having input with resistance in series and a capacitance in
feedback operates as a.?
52. A current having fundamental and third harmonics what will be the rms value of the
current?
53. Peak to peak value of voltage if rms voltage is 100V.
54. Rms voltage.
55. What is the approx efficiency of nuclear power plant?
56. What is the average current of a single phase full wave rectifier firing at angle alpha?
57. What is the function of freewheeling diode?
58. When SCR stops conduction? (holding current)
59. For measuring current why shunt resistance is used?
60. For economic operation of plant what is the condition?(taking into account the
penalty factor)
61. Incremental fuel cost of two plants is given and a load is given. Find out the load
sharing for economic operation of the plant?
62. A two port network is represented by ABCD parameters. What will be condition for
the two port network to be symmetrical?
63. Size of the conductor is determined by .
64. Which Surface is suitable for grounding?

Hi I am going to appear for the National Thermal Power Corporation Limited exam, could you please give me some useful tips to do well in the examination?

[Raman Vij]

Here are some of the tips which can be useful in preparing for examination not just for National Thermal Power Corporation Limited exam but in general as well:

1. Technical tips for examination:

Study the syllabus: Understanding the core subject is very necessary.
Solve Papers: Try to solve the previous year papers to get the feel of the examination.
Concentrate more on basic concepts.

2. Non technical tips for exams:
One should always remember following these tips for every exam.
First and foremost prerequisite to clear examination with good score is determination and perseverance to do well.
Just imagine how you will get good or high scores? Try to envision the moment that you got high score. The law of Attraction (LOA) will facilitate you to do so.
Yoga and Exercise will help you carry on with charged with positive energy. One can feel the difference once you start doing it. This will keep you in positive frame of mind and improve you self confidence.
Always start from the question for which you are confident enough. Do not waste time in assessment on strange questions.

Here below I am providing you with some of the questions for your reference:

1 A good brick should not absorb water by weight more than ____ of its dry weight.
(1) 5% (2) 10% (3) 15% (4) 20%

2 Efflorescence is
(1) the formation of white patches on the brick surface
(2) due to insoluble salts in the brick clay
(3) swelling of brick due to presence of carbonaceous matter and gas
(4) deformation of brick due to exposure to rain

3 The term king closer is used in relation to
(1) doors and widows (2) King post truss (3) Queen post truss (4) brick masonary

4 Which one of the following test is used to determine the rate of wear of stones?
(1) Crushing test (2) abrasion test (3) attrition test (4) impact test

5 The horizontal projections at the head of a door frame which are embedded into the side walls for fixing
the frame are known as
(1) horns (2) holdfasts (3) jambs (4) rebates

6 Which of the following is not a natural defect in timber?
(1) Knot (2) Twisted fibres (3) Burls (4) Honey combing

7 Seasoning of timber is required to
(1) soften the timber (2) harden the timber
(3) strengthening the timber (4) removing sap from timber

8 Before testing setting time of cement, one should first test for
(1) Soundness (2) strength (3) fineness (4) consistency

9 For complete hydration of cement, water-cement ratio needed is
(1) less than 0.25 (2) more than 0.25 but less than 0.35
(3) more than 0.35 but less than 0.45 (4) more than 0.45 but less than 0.60

10 Distemper is used to coat
(1) external concrete surfaces (2) interior surfaces not exposed to weather
(3) wood work (4) compound walls

11 The expansion and shrinkage of plywoods are comparatively very low as plies in plywood are
(1) held in position by adhesives (2) glued under pressure
(3) placed at right angles to each other (4) prepared from veneers

12 The representative fraction of 1/2500 means that the scale 1 cm is equal to
(1) 0.25 m (2) 2.5 m (3) 25 m (4) 250 m