IV B.Tech I Semester Examinations,May 2011 ELECTRICAL DISTRIBUTION SYSTEMS Electrical And Electronics Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. Discuss the procedure for fault current calculation in following faults:
(b) Single Line-Ground fault. (c) Double Line-Ground fault. (d) Line - Line fault.
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(a) 3-phase fault.
[4×4]
2. (a) Explain the salient points in general co-ordination procedure.
or
(b) Explain Fuse-Recloser coordination.
[8+8]
3. (a) What do you understand by sizing of the capacitors ? And how do you justify economically the connection of capacitors for the p.f improvement.
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(b) A 3-phase, 50Hz , 2000V induction motor develops 440H.P at a power factor 0.7 lag and efficiency 90% .The power factor is to be raised to unity by connecting a bank of condensers in delta across supply mains. If each of the capacitance unit built up of 4 similar 560V condensers, calculate the required capacitance of each condenser and its KVA rating. [8+8] 4. (a) Give different factors which will decide number of feeders. (b) Give the factors which will affect the selection of conductor size of feeder.[8+8] 5. (a) Give detailed analysis of three phase balanced primary lines
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(b) Consider a balanced 3 phase circuit having Vs and Vr are the sending and receiving end voltages respectively. R+jX is the total impedance of lines and I is the total current passing through the circuit. Find the load power factor for which the voltage drop is maximum? [8+8] [16]
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6. Give comparison between four and six feeder patterns.
7. (a) The input to a sub-transmission system is 87.6×106 kWh annually. On the peak load day of the year the peak is 25000kW and the energy input on that day is 3×106 kWh. Find the load factors for the year and for the peak load day. (b) Discuss the load modeling and its characteristics.
[8+8]
8. (a) Explain about the Induction type regulator. (b) Describe different types of equipment for voltage control with neat diagrams. [8+8] 1
Code No: R05410210
R05
Set No. 2
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2
Code No: R05410210
R05
Set No. 4
1. Give comparison between four and six feeder patterns.
[16]
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2. (a) Give detailed analysis of three phase balanced primary lines
in
IV B.Tech I Semester Examinations,May 2011 ELECTRICAL DISTRIBUTION SYSTEMS Electrical And Electronics Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
(b) Consider a balanced 3 phase circuit having Vs and Vr are the sending and receiving end voltages respectively. R+jX is the total impedance of lines and I is the total current passing through the circuit. Find the load power factor for which the voltage drop is maximum? [8+8]
or
3. (a) Give different factors which will decide number of feeders.
(b) Give the factors which will affect the selection of conductor size of feeder.[8+8]
uW
4. (a) The input to a sub-transmission system is 87.6×106 kWh annually. On the peak load day of the year the peak is 25000kW and the energy input on that day is 3×106 kWh. Find the load factors for the year and for the peak load day. (b) Discuss the load modeling and its characteristics.
[8+8]
5. (a) Explain the salient points in general co-ordination procedure. (b) Explain Fuse-Recloser coordination.
[8+8]
6. (a) Explain about the Induction type regulator.
nt
(b) Describe different types of equipment for voltage control with neat diagrams. [8+8]
7. (a) What do you understand by sizing of the capacitors ? And how do you justify economically the connection of capacitors for the p.f improvement.
Aj
(b) A 3-phase, 50Hz , 2000V induction motor develops 440H.P at a power factor 0.7 lag and efficiency 90% .The power factor is to be raised to unity by connecting a bank of condensers in delta across supply mains. If each of the capacitance unit built up of 4 similar 560V condensers, calculate the required capacitance of each condenser and its KVA rating. [8+8]
8. Discuss the procedure for fault current calculation in following faults: (a) 3-phase fault. (b) Single Line-Ground fault. (c) Double Line-Ground fault. 3
Code No: R05410210
R05
Set No. 4
(d) Line - Line fault.
[4×4]
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4
Code No: R05410210
R05
Set No. 1
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IV B.Tech I Semester Examinations,May 2011 ELECTRICAL DISTRIBUTION SYSTEMS Electrical And Electronics Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) What do you understand by sizing of the capacitors ? And how do you justify economically the connection of capacitors for the p.f improvement.
ld .
(b) A 3-phase, 50Hz , 2000V induction motor develops 440H.P at a power factor 0.7 lag and efficiency 90% .The power factor is to be raised to unity by connecting a bank of condensers in delta across supply mains. If each of the capacitance unit built up of 4 similar 560V condensers, calculate the required capacitance of each condenser and its KVA rating. [8+8]
2. Discuss the procedure for fault current calculation in following faults:
[4×4]
3. (a) Explain about the Induction type regulator. (b) Describe different types of equipment for voltage control with neat diagrams. [8+8] 4. (a) Give detailed analysis of three phase balanced primary lines
nt
(b) Consider a balanced 3 phase circuit having Vs and Vr are the sending and receiving end voltages respectively. R+jX is the total impedance of lines and I is the total current passing through the circuit. Find the load power factor for which the voltage drop is maximum? [8+8]
5. Give comparison between four and six feeder patterns.
[16]
Aj
6. (a) The input to a sub-transmission system is 87.6×106 kWh annually. On the peak load day of the year the peak is 25000kW and the energy input on that day is 3×106 kWh. Find the load factors for the year and for the peak load day. (b) Discuss the load modeling and its characteristics.
[8+8]
7. (a) Give different factors which will decide number of feeders. (b) Give the factors which will affect the selection of conductor size of feeder.[8+8] 8. (a) Explain the salient points in general co-ordination procedure. 5
Code No: R05410210
R05
Set No. 1
(b) Explain Fuse-Recloser coordination.
[8+8]
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or
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in
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6
Code No: R05410210
R05
Set No. 3
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IV B.Tech I Semester Examinations,May 2011 ELECTRICAL DISTRIBUTION SYSTEMS Electrical And Electronics Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
ld .
1. (a) The input to a sub-transmission system is 87.6×106 kWh annually. On the peak load day of the year the peak is 25000kW and the energy input on that day is 3×106 kWh. Find the load factors for the year and for the peak load day. (b) Discuss the load modeling and its characteristics.
[8+8]
2. (a) Give different factors which will decide number of feeders.
(b) Give the factors which will affect the selection of conductor size of feeder.[8+8]
or
3. Give comparison between four and six feeder patterns.
[16]
4. (a) Explain the salient points in general co-ordination procedure. (b) Explain Fuse-Recloser coordination.
[8+8]
uW
5. Discuss the procedure for fault current calculation in following faults: (a) 3-phase fault.
(b) Single Line-Ground fault.
(c) Double Line-Ground fault. (d) Line - Line fault.
[4×4]
6. (a) Explain about the Induction type regulator.
nt
(b) Describe different types of equipment for voltage control with neat diagrams. [8+8]
7. (a) What do you understand by sizing of the capacitors ? And how do you justify economically the connection of capacitors for the p.f improvement.
Aj
(b) A 3-phase, 50Hz , 2000V induction motor develops 440H.P at a power factor 0.7 lag and efficiency 90% .The power factor is to be raised to unity by connecting a bank of condensers in delta across supply mains. If each of the capacitance unit built up of 4 similar 560V condensers, calculate the required capacitance of each condenser and its KVA rating. [8+8]
8. (a) Give detailed analysis of three phase balanced primary lines (b) Consider a balanced 3 phase circuit having Vs and Vr are the sending and receiving end voltages respectively. R+jX is the total impedance of lines and I is the total current passing through the circuit. Find the load power factor for which the voltage drop is maximum? [8+8] 7
(b) Give the factors which will affect the selection of conductor size of feeder.[8+8] · 5. (a) Give detailed analysis of three phase balanced primary lines · (b) Consider a balanced 3 phase circuit having Vs and Vr are the sending and · receiving end voltages respectively. R+jX is the total impedance of lines and · I is the total ...
[16] · 4. What are channel,circuit and half circuit in the context of satellite telemetry sys- .... 3. Describe the conditions for total internal reflection within a fibre. [16].
(b) Describe a DC Servo Motor with a neat sketch. [8+8] · 4. (a) What is a timing belt? Discuss the use of Timing belts in power transmission? (b) Discuss various ...
(b) Consider any two networks of your choice which support Circuit switching or ... (b) Which is more efficient, circuit switching or packet switching? Why?
(a) What is the difference between logical I/O and device I/O? (b) Explain feed back scheduling policy. [8+8] · 2. (a) How can logical address space be ...
kerosene, and fuel oil must be limited as also shown in this table. There are no ... equipment is a function of x, the size (horsepower ) of the motor, namely.
(b) What is meant by displacement function? (c) Give the importance of Pascal Triangle. [4+6+6] · 3. Determine the displacements at nodes and the stresses in ...
The horizontal distance between u/s face and center line of drain holes is 8 m. ... (c) Cut-off trench ... Bed width of parent channel U/S / D/S = 45 m/40 m. [16].
Also draw the relevant circuit diagram. (b) Draw the resistive model of a CMOS inverter and explain its behavior for. LOW and HIGH outputs. [8+8]. 8. (a) It is necessary to identify the position of mechanical disk, when rotates with a step of 450. Gi
4. Give the syntax for 'awk'. Discuss about the selection criteria in awk. How to · embed action in to this command. Explain with examples. [16] · 5. Write about different Unix locking techniques. [16] · 6. (a) What are the differences between shell
of Rs. 1,500 would be deposited in this fund under an ordinary annuity plan. All · money in the fund can be .... (b) Discounted cash flow · (c) Net present worth ... would last for 10 years. A worn-out storage tank of capacity equivalent to the new.
R05. Set No. 2. III B.Tech I Semester Examinations,May 2011 · WEB TECHNOLOGIES · Information Technology ... that describes your college. The paragraph ...
(b) What is the necessity of heat treatment after carburizing? Explain. On what ... (b) What is the difference in heat treatment between 18% Ni and the 25% Nickel.
is subjected to a load of 200 kN, find the stresses developed in the two materials. ... Compare the values of max. and minimum hoop stresses for a cast steel ...
The cores of two identical transformers A and B carry alternating fluxes whose instantaneous values are (0.01 sin 314t)W and 0.012 (1.1 sin 628t+0.1 sin 1884t).
(a) Explain live node, E-node and dead node with an example. (b) Explain the method of reduction to solve TSP problem using Branch and · Bound. [8+8] · 3. (a) Prove that Prim's algorithm finds a minimum spanning tree. (b) Explain the single source sh
at 0.8 p.f. lagging and 15A at 0.6 p.f. lagging respectively, both expressed ... (b) A single-phase motor takes a current of 10 amps at a p.f. of 0.707 lagging.
If the tensile stress is not to exceed 17MPa, find the safe. u.d.l. which the beam can carry. Also find maximum compressive stress. Draw the sketch showing the ...
