Q-Bank_Electrical Power System-1-2150908

	CH:1 Supply System
1)	Draw and describe typical one line diagram for power supply scheme
2)	Write down comparison between A.C. and D.C.
3)	Prove different comparison between conductor material in overhead transmission line & underground transmission line.
4)	what are the factor to be consider during the economics of power transmission? OR Prove and define kelvin’s law with suitable graphical representation. Also write limitation of kelvin’s law.
	CH:2 Mechanical Design of Overhead lines
5)	Which are the properties of conductor material? Explain Commonly conductor materials to be used in overhead transmission line?  Why ACSR used in transmission line: Give your comment.
6)	Which are the properties of line supports? Explain the different line support used for transmission and distribution line of electric power.
7)	What is cause of insulation failure? Explain different types of insulator to be used in transmission and distribution line. Enlist the advance insulator to be used in modern power system.
8)	Why the voltage is not uniform over the string of suspension insulator string? Explain the string efficiency with mathematical expression. Enlist the method of improving the string efficiency.
9)	Define and calculate sag of overhead transmission line.
	Electrical Design of Overhead lines
	CH:3 Inductance and resistance of transmission line
10)	Derive the expression of loop inductance of single phase line.
11)	Derive an expression for inductance of 3-phase line when the conductors are symmetrically placed.
12)	Derive an expression for inductance of 3-phase line when the conductors are Unsymmetrically placed.
13)	Explain the term: Self GMD and Mutual GMD. Why it is not in capacitance calculation.
	Ch :4 Capacitance of transmission line
14)	Derive the expression of capacitance of single phase line.
15)	Derive an expression for capacitance of 3-phase line when the conductors are symmetrically and Unsymmetrically placed.
	Ch: 5 AC and DC Distribution
	Ø Distribution System General
16)	Classified Ac and DC distribution in brief with application.
17)	Comparison between overhead and Underground system.
18)	Which are the factors to be consider during distribution system. Explain connection schemes of different distribution system.
	Ø D.C. Distribution
19)	Example: Dc distributed at one end- 1) Concentrated Loading, 2) Uniformly.
20)	Explain D.C. distribution fed at both ends for concentrated loading.
21)	Explain ring main distributor with one example.
	Ø A.C. Distributor
22)	How the A.C.  distributor different form D.C. Distributor ? Explain the power factor of load current design w.r.t.  1) Vs & Vr, 2) Load voltage itself.
23)	Explain the four wire star-connected unbalanced loads.
	Ch: 6 Representation of power system component
24)	Explain one-line diagram in brief. What is P. U. system? Write advantages of per unit system.
25)	Explain the Equivalent Circuit model of Synchronous machine. From the first principal, derive Vt = Ef – Ia (Ra+ jXs) Where Xs = Xar + Xl. Also draw the equivalent circuit diagram.
26)	Explain per unit representation of transformer & three phase network.
	Ch : 7 Undergrounding cables
27)	Draw and Explain construction of underground cable.
28)	What are the properties of insulating material of underground cables? Explain insulating material used for making underground cables.
29)	In which parameter insulating material to be classified. explain the classification of underground cable with different voltage rating.
30)	How 3-phase cable classified with their services. Explain in brief.
31)	Write down the expression for insulation resistance of a single-core cable. OR Show the insulating resistance of cable is inversely proportional to its length.
32)	Give your comment: single core cable consider as equivalent to two long co-axial cylinders. Derive the expression for capacitance of single-core cable.
33)	What is dielectric stress? Explain dielectric stress in single-core cable.
34)	Explain Most Economical conductor size in a cable.
35)	Enlist the method to be used in achieving uniform dielectric stress in dielectric of cable. Explain in brief.
36)	Explain capacitance of 3-Core cable in underground cable.