Transmission Distribution and Utilization [15EE52T]

Question Bank – Unit Wise Department of Electrical and Electronics Engg. [Jain Polytechnic, Belagavi -14] Page 1

Unit – 1: Transmission Systems

S No Questions Marks Appeared in

1 List the types of power transmission system and explain. 5 Nov/Dec 2017

2 State the standard voltage used for power transmission

and distribution. 5 Nov/Dec 2017

3 Explain the classification of Transmission lines based on

distance 6 Nov/Dec 2017

4 Briefly explain the line comfort 4 Nov/Dec 2017

5 Explain with diagram the construction of 3-core

underground cables. 5 Nov/Dec 2017

Unit - 2: HVDC,FACTS and SUB-STATIONS

S No Questions Marks Appeared in

1 Explain with single line diagram HV DC Transmission 5 Nov/Dec 2017

2 Explain the flexible AC Transmission system. 6 Nov/Dec 2017

3 List the objectives of FACTS 4 Nov/Dec 2017

Unit-3: Distribution Systems

S No Questions Marks Appeared in

1 Explain the different types of AC distribution system. 5 Nov/Dec 2017

2 Explain ring main Distribution system. 5 Nov/Dec 2017

3 Explain the AC Secondary Distribution system. 6 Nov/Dec 2017

4 State the need of Distribution system. 4 Nov/Dec 2017

Unit-4: Electric Heating and Welding

S No Questions Marks Appeared in

Transmission Distribution and Utilization [15EE52T]

Question Bank – Unit Wise Department of Electrical and Electronics Engg. [Jain Polytechnic, Belagavi -14] Page 2

1 List the advantages of Direct Arc furnace. 5 Nov/Dec 2017

2 List the advantages of high frequency coreless Induction

furnace. 5 Nov/Dec 2017

3 List the applications of Dielectric heating. 4 Nov/Dec 2017

4 Explain with diagram High frequency coreless Induction

furnace. 6 Nov/Dec 2017

5 Explain different methods of Electric heating. 4 Nov/Dec 2017

6 List the advantages of Electric heating. 6 Nov/Dec 2017

7 Explain neat sketch the Direct arc heating method. 4 Nov/Dec 2017

Unit-5: Electro-Chemical Process, Refrigeration and Air Conditioning

S No Questions Marks Appeared in

1 List the properties of refrigerator. 5 Nov/Dec 2017

2 State and explain Faraday’s Laws of Electrolysis. 4 Nov/Dec 2017

3 Explain with Electric circuit the block diagram for air-

conditioning unit.

6 Nov/Dec 2017

4 Explain with diagram the working of Vapor Compression

refrigerator.

6 Nov/Dec 2017

5 List the necessity of Electroplating. 4 Nov/Dec 2017

6 List the types of Electric arc welding. 4 Nov/Dec 2017

Unit-6: Illumination

S No Questions Marks Appeared in

1 Explain Direct lighting scheme. 5 Nov/Dec 2017

2 State and explain the Laws of Illumination. 6 Nov/Dec 2017

3 Explain construction and working of mercury vapor lamp. 6 Nov/Dec 2017

Transmission Distribution and Utilization [15EE52T]

Question Bank – Unit Wise Department of Electrical and Electronics Engg. [Jain Polytechnic, Belagavi -14] Page 3

4

A small workshop measuring 20*10*3 m is to be

illuminated with 200lux on the work plane. The output of

each lamp selected is 4000 lumens. The utilization factor

is 0.75 and the maintenance factor is 0.8. Find the number

of lamps required.

4 Nov/Dec 2017

Transmission Distribution and Utilization [15EE52T]

Question Bank – Unit Wise Department of Electrical and Electronics Engg. [Jain Polytechnic, Belagavi -14] Page 1

Unit – 1: Fundamentals of Protection

S No Questions Marks Appeared in

1 Explain Importance of calculation of Short Circuit Current. 5 Nov/Dec 2017

2 List the Harmful Effects of short circuit current 5 Nov/Dec 2017

3 Explain surge absorbers.

6 Nov/Dec 2017

April/May 2018

4 List the essential features of switch gear.

4 Nov/Dec 2017

April/May 2018

5 A 3phase transmission line operating at 10 kV and having a

resistance of 1ohm and reactance of 4Ohm is connected to the

generating station bus-bars through 5MVA step up transformer

having a reactance of 5%. The bus-bars are supplied by 10

MVA alternators having 10% reactance. Calculate the short-

circuit kVA fed at symmetrical fault between phases if it

occurs A) At the load end of transmission line B) At the high

voltage terminal of the transformer

5 Nov/Dec 2017

Unit - 2: Fuse and Circuit Breakers

S No Questions Marks Appeared in

1 List Desirable Characteristics of Fuse elements 5 Nov/Dec 2017

2 Illustrate the working of Circuit Breaker by Trip Circuit Mechanism 6 Nov/Dec 2017

3 Explain the terminologies – Arc-Voltage, arching Time, Pre –Arching Time, Prospective Current, T R V, Recovery Voltage, R RR

V, Total Break Time 4 Nov/Dec 2017

4 Explain the different methods of arc extinction 5 Nov/Dec 2017

5 Explain construction and working of Puffer Type SF6 CB 5 Nov/Dec 2017

6 Explain construction and working of Non Puffer Type SF6 CB 6 Nov/Dec 2017

April/May 2018

7 State Merits and Demerits of SF6 CB 5 April/May 2018

8 List Differences between Indoor type and Outdoor type Switchgear 5 April/May 2018

9 Explain construction and working of HRC fuse 6 April/May 2018

Unit-3: Protective Relays

S No Questions Marks Appeared in

1 Compare Static Relays with Electro-Magnetic Relays 5 Nov/Dec 2017

2 List different requirements of Protective Relays 5 Nov/Dec 2017

3 Explain construction and working of Induction type Non-directional over current relay

6 Nov/Dec 2017

4 Explain construction and working of Static Type Over Current Relay 4 Nov/Dec 2017

5 Explain with block diagram Microprocessor based Over Current Relay

6 April/May 2018

6 List the applications Microprocessor based Over Current Relay 5 April/May 2018

7 Compare Static relays and Microprocessor based relays 5 April/May 2018

8 Explain with a neat sketch the working of Voltage balance

differential Relay 5 Nov/Dec 2017

April/May 2018

9 Define primary and backup protection. 3

Transmission Distribution and Utilization [15EE52T]

Question Bank – Unit Wise Department of Electrical and Electronics Engg. [Jain Polytechnic, Belagavi -14] Page 2

10 Explain with a neat sketch the working of Definite Distance Type

Impedance Relays April/May 2018

11 Explain with a neat sketch the working of Time-distance Impedance

Relay 7 April/May 2018

Unit-4: Protection of Generators and Transformers

S No Questions Marks Appeared in

1 Explain with a neat sketch construction and working of Buchholz Relay

5 Nov/Dec 2017

2 Explain various Abnormalities or faults that occur in Alternators. 5 Nov/Dec 2017

3 Explain various Abnormalities occurs in Transformers 4 Nov/Dec 2017

4 Explain with a neat sketch construction and working of Combined

Leakage and Overload Protection of Transformers 6 Nov/Dec 2017

April/May 2018

5 Explain with a neat sketch construction and working of Circulating

Current Scheme for Transformers Protection 4 Nov/Dec 2017

6 Explain differential protection of alternators and transformers. 6 Nov/Dec 2017

Unit-5: Protection of Feeders and Bus-Bars

S No Questions Marks Appeared in

1 Explain Differential Protection of Bus –Bars 5 Nov/Dec 2017

2 Explain Time Graded Protection for Radial Feeders 4 Nov/Dec 2017

3 Explain basic distance protection scheme for protection of lines. 6 Nov/Dec 2017

4 Explain the Importance of Protection of Lines and Bus –Bars 6 Nov/Dec 2017

Unit-6: Substation and Maintenance

S No Questions Marks Appeared in

1 List the tests conducted on Circuit Breakers 5 Nov/Dec 2017

2 Explain the indoor and outdoor type substation 6 Nov/Dec 2017

3 List the Testing methods of CT’s & PT’s 6 Nov/Dec 2017

4 Explain Solid, Resistance and Reactance Earthing 4 Nov/Dec 2017

5 Explain Type Test and Routine Test 5 April/May 2018

6 Explain Neutral Earthing 5 April/May 2018

ELECTRICAL ESTIMATION AND COSTING [15EE54T]

Question Bank – Unit Wise Department of Electrical and Electronics Engg [Jain Polytechnic, Belagavi] Page 1

Unit - 1 Introduction

S No Questions Marks Appeared in

1 Define standardization .list advantages of standard cost 5 Nov./Dec.17

2 Define Neutral earthling. Mention standard values of earth

resistance.

5 Nov./Dec.17

3 Define estimation. List the importance of estimation 5 Apr/May18,

Nov/Dec 18

4 Draw a neat diagram of pipe earthing and label the parts. 5 Nov/Dec 18

5 List the methods of reducing earth resistance. 5 Apr/May18,

Unit 2-Service Mains

1 List the code of practice for service mains. Draw a neat

diagram of OH service main and label the parts.

10 Nov./Dec.17

Apr/May18,

2 Prepare an estimate cost for underground service

connection to a domestic supply, single phase load of 4KW

for a distance of 12 m from the pole

10 Nov./Dec.17

3 Draw a neat diagram of UG service main and label the

parts

5 Nov/Dec 18

4 Prepare the schedule of materials for providing OH service

connection to a residential building with 4 KW .supplier

pole is 15 m away. Prepare the estimate of cost for the

above

15 Nov/Dec 18

5 Prepare the schedule of materials for providing OH service

connection to a residential building with 1200 W lighting

and 3 KW heating load .The supplier pole is 10 m away.

Prepare the estimate of cost for the above.

15 Apr/May18

Unit 3-Lighting Installations

1 List the code of practice for lighting installation 5 Nov./Dec17

2 . The sketch given below shows the plan of a residential

building which has to be wired up as an AEH installation.

With heating load of 1 KW at bath and 2 KW at kitchen

a) Draw the wiring plan for AEH.

b) Propose the load requirements for lighting.

c) Prepare the schedule of materials for the above lighting

circuit and heating circuit

d) Prepare the estimate the cost for the above lighting ckt

20 Nov/Dec 17

3 The sketch given below shows the plan of a residential

building which has to be

Wired up as an AEH installation. (

a) Draw the wiring plan for AEH.

b) Propose the load requirements for lighting.

c) Prepare the schedule of materials for the above lighting

circuit

20 Nov/Dec 18

ELECTRICAL ESTIMATION AND COSTING [15EE54T]

Question Bank – Unit Wise Department of Electrical and Electronics Engg [Jain Polytechnic, Belagavi] Page 2

Prepare the estimate the cost for the above lighting circuit

4 The sketch given below shows the plan of a residential

building which has to be Wired up as an AEH installation.

With a heating load of 3 Kw

a) Draw the wiring plan for AEH.

b) Propose the load requirements for lighting and heating

c) Prepare the schedule of materials for the above lighting

circuit and heating circuit

Prepare the estimate the cost for the above lighting circuit

and heating circuit

20 Apr/May18

Unit – 4 Power Installations

1 Write a specification for power capacitor,for 10hp

induction motor 440v. List the code of practice for power

installation

5 Nov./Dec17

2 A small workshop has to be equipped with the following

machines of inner dimensions 8M X 6M

(I) a 3 hp ,400 v,3 phase motor for lathe machine-1 no

(ii) A 6KVA ,400v ,welding transformer ,3 ph-1No with

efficiency of 80% and power factor of 0.8 lagging

10 Nov./Dec 17

3 Write the specification of cable used for providing power

supply to a 15 HP induction motor

5 Nov/Dec 18

4 A1 5 HP irrigation pump set is to be installed at the centre

of a pump house of size 5 m x 5m. Assume the ceiling

height as 3.5m . Draw the layout of pump house and wiring

plan for power circuit (only). Prepare the schedule of

materials with specifications.

10 Nov/Dec 18

5 In a workshop one 10 HP ,440v,50 hz three phase

induction motor is to be installed. Prepare a schedule of

materials required with a layout of the wiring plan

15 Apr/May18

Unit – 5 Distribution lines and Transformer centre

1 List the code of practice for 11kv distribution lines. 5 Nov./Dec.17

2 Draw the single line diagram of distribution transformer

centre.Prepare the schedule of materials and specification

for erection of a 100 KVA transformer centre

5+15 Nov./Dec.17

3 Prepare schedule of materials required for extension of a

11 KV feeder line for a distance of 6KM.the line has two

deviations and two road crossings and average span of 80m

15 Nov./Dec.17

4 Prepare the schedule of materials required for running a 15

KM long 415V LT distribution line. Assume span as 50m.

20 Nov/Dec 18

5 Prepare schedule of materials required for Tapping and

extending of a 11 KV feeder line for a distance of 10 KM

and average span of 80m.Assume the support has to be

anchored for every km

20 Nov/Dec 18

6 A 11 kv feeder line is to be extended to a distance 10 20 Apr/May18

ELECTRICAL ESTIMATION AND COSTING [15EE54T]

Question Bank – Unit Wise Department of Electrical and Electronics Engg [Jain Polytechnic, Belagavi] Page 3

km.The line crosses highway and telephone line enroute

and lines has three deviations. Assume average span of

80m and every 10 th pole to be anchored

a) Draw toposheet of the route of extended power line

b) Prepare schedule of materials

Unit – 6 Transmission lines and substations

1 Prepare the schedule of materials required for running a 80

KM long 110 KV single circuit transmission line. Assume

average span as 300m.

10 Nov./Dec.17

Apr/May18

2 Prepare the schedule of materials for a 5 MVA 66/11 KV

substation with specifications

10 Nov./Dec.17,

Nov/Dec 18,

Apr/May18

3 Prepare the schedule of materials required for running a

100 KM long 110 KV single circuit transmission line.

Assume average span as 300m.

10 Nov/Dec 18

4 Prepare the schedule of materials required for running a

100 KM long 220 KV single circuit transmission line.

Assume average span as 300m.

10 Apr/May18