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Power Grid Exam Question Paper |

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Re: Power Grid Exam Question Paper
Here is the list of few questions of Power Grid Exam Question Paper which you are looking for . 1. resistance of ideal transformer winding ans. zero 2. hysteresis loss in transformer depends on frequency as ans. square of frequency 3. in no load test of transformer input power is equal to ans. iron loss or constant losses 4. zero voltage regulation occurs in which power factor condition ans. leading power factor condition 5. load sharing in parallel operation of transformer ans. impedance is inversely proportional to KVA rating of transformer 6. relation between starting torque of slip ring induction motor and squirrel cage induction motor ans. starting torque of slip ring induction motor is more than starting torque of squirrel cage induction motor 7. relation between rotor power input, slip and rotor copper loss in induction motor ans. rotor copper loss is equal to slip time the rotor input power 8. relation between starting torque when induction motor start with the help of star delta starter and auto transformer ans. in star delta transformer starting starting torque is 1/3 times the full load torque with some other factor 9. due to feedback which factor increases ans. stability of the system 10. in second order system damping factor 11. numerical on peak overshoot 12.numerical on steady state error 13. numerical on transfer function of system 14. numerical on stability of system 15. problem on root locus 16. effect of integral controller on system stability ans. for closed loop system by integral controller steady state stability increases 17. to gate high starting torque starting method of induction motor ans. external resistance starting method 18. to gate low starting power factor in starting of induction motor ans. external reactance starting method 19. relation between power transferred by 1phase line and 2 circuit line 20.bundled conductors are used to ans. reduce corona loss 21. relation between corona loss with frequency and diameter of conductor ans. corona loss directly proportional to frequency and inversely proportional to diameter of conductor 22. series capacitor used in power system to ans. series capacitor for stability of power system 23. insulation level is decided by ans. switching over voltage 24. effect of using bundled conductor on inductance of conductor ans. decreases 25. insulator type used when there is dead end or change in direction of conductor ans. strain type 26. resistance switching used in which circuit breaker ans. air blast circuit breaker 27. relation between resistance , inductance and capacitance in resistance switching 28. where are the lightning arrestars are located ans. near the transformer 29. which type of relay are used in overloading ans. thermal relay 30. whenever difference in current which relay is used ans. differential relay 31. which distance relay is directional ans. mho relay 32. damper winding are used in alternator for ans. prevent hunting and provide high starting torque 33.effect of armature reaction ans. both cross magnetising and demagnetising 34.question from inverted v curve of synchronous motor curve 35.numerical from source transformation technique 36. numerical related to find rms value of triangular wave 37. in series RLC circuit if frequency greater than resonent frequency than impedence offered by circuit ans. inductive 38.numerical from dc switching of inductor , capacitor and resistance in a network 39. eddy current damping used in which type of instrument ans. pmmc 40. fluid friction damping used in which type instrument ans. horizontal MI 41. numerical from two wattmeter method 42. numerical from over ranging of digital instrument 43.two or three question from CRO 44.relation between latching current and holding current ans. latching current> holding current 45. di/dt protection of thyrestor ans . using inductor in series 46. difference between BJT and MOSFET ans. in BJT sec. breakdown 47. terminal of IGBT 48. terminals of MOSFET 49. for proper commutation relation between circuit turn off time and thyristor turn off time ans. circuit turn off time must be greater than thyristor turn off time 50. specific of earthing transformer ans. no secondary |

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Re: Power Grid Exam question paper
Hi, as you want the question paper of Power Grid Exam for Diploma Electrical so here I am providing you Power Grid Exam question paper1. 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? |

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Re: Power Grid Exam question paper
You are asking for the Power grid Placement Paper Question Paper. Here I am providing you the Power grid Placement Paper Question Technical questions Paper. This is as follows: 1. Resistance of ideal transformer winding ans. zero 2. Hysteresis loss in transformer depends on frequency as ans. square of frequency 3. In no load test of transformer input power is equal to ans. iron loss or constant losses 4. Zero voltage regulation occurs in which power factor condition ans. leading power factor condition 5. Load sharing in parallel operation of transformer ans. impedance is inversely proportional to KVA rating of transformer 6. Relation between starting torque of slip ring induction motor and squirrel cage induction motor ans. starting torque of slip ring induction motor is more than starting torque of squirrel cage induction motor 7. Relation between rotor power input, slip and rotor copper loss in induction motor ans. rotor copper loss is equal to slip time the rotor input power 8. Relation between starting torque when induction motor start with the help of star delta starter and auto transformer ans. in star delta transformer starting starting torque is 1/3 times the full load torque with some other factor 9. Due to feedback which factor increases ans. stability of the system 10. In second order system damping factor 11. Numerical on peak overshoot 12.Numerical on steady state error 13. Numerical on transfer function of system 14. Numerical on stability of system 15. Problem on root locus 16. Effect of integral controller on system stabilityans. for closed loop system by integral controller steady statestability increases 17. To gate high starting torque starting method of induction motor ans. external resistance starting method 18. To gate low starting power factor in starting of induction motor ans. external reactance starting method 19. Relation between power transferred by 1phase line and 2 circuit line 20.Bundled conductors are used to ans. reduce corona loss 21. Relation between corona loss with frequency and diameter of conductor ans. corona loss directly proportional to frequency and inversely proportional to diameter of conductor 22. Series capacitor used in power system to ans. series capacitor for stability of power system 23. Insulation level is decided by ans. switching over voltage 24. Effect of using bundled conductor on inductance of conductor ans. decreases 25. Insulator type used when there is dead end or change in direction of conductor ans. strain type 26. Resistance switching used in which circuit breaker ans. air blast circuit breaker 27. Relation between resistance , inductance and capacitance in resistance switching 28. Where are the lightning arrestars are located ans. near the transformer 29. Which type of relay are used in overloading ans. thermal relay 30. Whenever difference in current which relay is used ans. differential relay 31. which distance relay is directional ans. mho relay 32. Damper winding are used in alternator for ans. prevent hunting and provide high starting torque 33.Effect of armature reaction ans. both cross magnetising and demagnetising 34.Question from inverted v curve of synchronous motor curve 35.numerical from source transformation technique 36. Numerical related to find rms value of triangular wave 37. In series RLC circuit if frequency greater than resonent frequency than impedence offered by circuit ans. inductive 38.Numerical from dc switching of inductor , capacitor and resistance in a network 39. Eddy current damping used in which type of instrument ans. pmmc 40. Fluid friction damping used in which type instrument ans. horizontal MI 41. Numerical from two wattmeter method 42. Numerical from over ranging of digital instrument 43.Two or three question from CRO 44.Relation between latching current and holding current ans. latching current> holding current 45. di/dt protection of thyrestor ans . using inductor in series 46. Difference between BJT and MOSFET ans. in BJT sec. breakdown 47. Terminal of IGBT 48. terminals of MOSFET 49. For proper commutation relation between circuit turn off time and thyristor turn off time ans. circuit turn off time must be greater than thyristor turn off time 50. specific of earthing transformer ans. no secondary |

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Re: Power Grid Exam Question Paper
As you want I am here providing you sample paper of the Power grid Placement test. Sample paper :Power Grid Placement Paper1. Resistance of ideal transformer winding ans. zero 2. Hysteresis loss in transformer depends on frequency as ans. square of frequency 3. In no load test of transformer input power is equal to ans. iron loss or constant losses 4. Zero voltage regulation occurs in which power factor condition ans. leading power factor condition 5. Load sharing in parallel operation of transformer ans. impedance is inversely proportional to KVA rating of transformer 6. Relation between starting torque of slip ring induction motor and squirrel cage induction motor ans. starting torque of slip ring induction motor is more than starting torque of squirrel cage induction motor 7. Relation between rotor power input, slip and rotor copper loss in induction motor ans. rotor copper loss is equal to slip time the rotor input power 8. Relation between starting torque when induction motor start with the help of star delta starter and auto transformer ans. in star delta transformer starting starting torque is 1/3 times the full load torque with some other factor 9. Due to feedback which factor increases ans. stability of the system 10. In second order system damping factor 11. Numerical on peak overshoot 12.Numerical on steady state error 13. Numerical on transfer function of system 14. Numerical on stability of system 15. Problem on root locus 16. Effect of integral controller on system stabilityans. for closed loop system by integral controller steady statestability increases 17. To gate high starting torque starting method of induction motor ans. external resistance starting method 18. To gate low starting power factor in starting of induction motor ans. external reactance starting method 19. Relation between power transferred by 1phase line and 2 circuit line 20.Bundled conductors are used to ans. reduce corona loss 21. Relation between corona loss with frequency and diameter of conductor ans. corona loss directly proportional to frequency and inversely proportional to diameter of conductor 22. Series capacitor used in power system to ans. series capacitor for stability of power system 23. Insulation level is decided by ans. switching over voltage 24. Effect of using bundled conductor on inductance of conductor ans. decreases 25. Insulator type used when there is dead end or change in direction of conductor ans. strain type 26. Resistance switching used in which circuit breaker ans. air blast circuit breaker 27. Relation between resistance , inductance and capacitance in resistance switching 28. Where are the lightning arrestars are located ans. near the transformer 29. Which type of relay are used in overloading ans. thermal relay 30. Whenever difference in current which relay is used ans. differential relay 31. which distance relay is directional ans. mho relay 32. Damper winding are used in alternator for ans. prevent hunting and provide high starting torque 33.Effect of armature reaction ans. both cross magnetising and demagnetising 34.Question from inverted v curve of synchronous motor curve 35.numerical from source transformation technique 36. Numerical related to find rms value of triangular wave 37. In series RLC circuit if frequency greater than resonent frequency than impedence offered by circuit ans. inductive 38.Numerical from dc switching of inductor , capacitor and resistance in a network 39. Eddy current damping used in which type of instrument ans. pmmc 40. Fluid friction damping used in which type instrument ans. horizontal MI 41. Numerical from two wattmeter method 42. Numerical from over ranging of digital instrument 43.Two or three question from CRO 44.Relation between latching current and holding current ans. latching current> holding current 45. di/dt protection of thyrestor ans . using inductor in series 46. Difference between BJT and MOSFET ans. in BJT sec. breakdown 47. Terminal of IGBT 48. terminals of MOSFET 49. For proper commutation relation between circuit turn off time and thyristor turn off time ans. circuit turn off time must be greater than thyristor turn off time 50. specific of earthing transformer ans. no secondary |