Digital Electronics ( sem. 4) Question Bank

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MIDSEM syllabus for DIGITAL ELECTRONICS (SEM-4)

Ch. 1 : Number systems (Whole chapter)

Ch.2 : Logic families (Whole chapter)

Ch.3 : Boolean Algebra (Whole chapter)

Ch.4 : Combinational Logic Circuit (Whole chapter)

Ch.5 : Flip Flops and Sequential Logic and Circuits:
           Basic difference between Combinational logic and Sequential logic
           Flip-Flops like S-R , J-K, D.

2140909- FIELD THEORY TUTORIAL AND QUESTION BANK (4TH SEM)

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2140909 - FIELD THEORY MID EXAM SYLLABUS (4th sem)

SYLLABUS FOR MID 1

1.Vector Analysis

2.Coulomb’s law and Electric Field Intensity 

3.Electric Flux Density, Gauss’ law and Divergence

4.Energy and Potential

5.The Steady Magnetic Field 

6.Effects of Electromagnetic Fields

MID-SEM EXAMINATION SYLLABUS FOR 8TH EVEN SEM 2017-18: SUBJECT : 2180910

SUBJECT: ENERGY CONSERVATION AND AUDIT (2180910)

1. Energy Audit Methodology and recent trends:
General Philosophy, need of Energy Audit and Management, EC Act, Definition and Objective of Energy Management, General Principles of Energy Management. Energy Management Skills, Energy Management Strategy. Economics of implementation of energy optimization projects, it’s constraints, barriers and limitations, Financial Analysis: Simple Payback, IRR, NPV, Discounted Cashflow;
Report-writing, preparations and presentations of energy audit reports, Post monitoring of energy conservation projects, MIS, Case-studies / Report studies of Energy Audits. Guidelines for writing energy audit report, data presentation in report, findings recommendations, impact of renewable energy on energy audit recommendations. Instruments for Audit and Monitoring Energy and Energy Savings, Types and Accuracy. Case studies of implemented energy cost optimization projects in electrical utilities as well as thermal utilities.

2. Electrical Distribution and Utilization:
Electrical Systems, Transformers loss reductions, parallel operations, T & D losses, P.F. improvements, Demand Side management (DSM), Load Management, Harmonics & its improvements, Energy efficient motors and Soft starters, Automatic power factor Controllers, Variable speed drivers, Electronic Lighting ballasts for Lighting, LED Lighting, Trends and Approaches. Study of 4 to 6 cases of Electrical Energy audit and management (Power factor improvement, Electric motors, Fans and blowers, Cooling Towers, Industrial/Commercial Lighting system, etc.)

NOTE-Students are required to bring a calculator (as per GTU guidelines) for the examination.

MIDSEM syllabus for POWER ELECTRONICS-2 (Sem-6)

Ch.1 DC to AC converter: Inverter (Whole chapter)

Ch.2 AC voltage controller (Whole chapter)

Ch.3 Cycloconverter (Whole chapter)

Note: 1. Students are advised to refer question bank posted in this blog earlier.
          2. These chapters are according to GTU syllabus.

DRD/ SKP

MID SEM EXAM SYLLABUS FOR6 TH S SUB :HIGH VOLTAGE ENGG (2160904)

1.        Introduction: Electrostatic fields and field stress control: Electrical field distribution and breakdown strength of insulating materials - fields in homogeneous, isotropic materials - fields in multi-dielectric, isotropic materials - numerical method: Finite Element Method (FEM), charge simulation method (CSM)

2.      Electrical breakdown in gases Gases as insulating media - ionization and decay processes, Townsend first ionization coefficient, photo ionization, ionization by interaction of metastable with atoms, thermal ionization, deionization by recombination, deionization by attachment–negative ion formation, examples - cathode processes – secondary effects, photoelectric emission, electron emission by positive ion and excited atom impact, thermionic emission, field emission, Townsend second ionization coefficient, secondary electron emission by photon impact, examples - transition from non-self-sustained discharges to breakdown, the Townsend mechanism, examples - the streamer or ‘kanal’ mechanism of spark, examples - the sparking voltage–Paschen’s law, penning effect, the breakdown field strength, breakdown in non-uniform fields partial breakdown, corona discharges.

3.      Breakdown in liquid: Liquid as insulators, breakdown in liquids - electronic breakdown, suspended solid particle mechanism, cavity breakdown, examples - static electrification in power transformers, transformer oil filtration, transformer oil test, alternative liquid insulations like vegetable oils, esters and silicon oils.

4.      Generation of high voltages : Generation of high direct voltages, half and full wave rectifier circuits, voltage multiplier circuits, Van de Graff generators, electrostatic generators, examples - generation of alternating voltages, testing transformers, cascaded transformers, resonant transformers, examples - impulse voltages, Standard lightning and switching surge and associated parameters and their corrections, impulse voltage generator circuits, Marx circuit, operation, design and construction of impulse generators, examples - impulse current generator - control systems.

5.      Measurement of high voltages: High direct voltage measurement, peak voltage measurements by spark gaps, sphere gaps, reference measuring systems, uniform field gaps, rod gaps, factors affecting sphere gap measurements, examples - electrostatic voltmeters - ammeter in series with high ohmic resistors and high ohmic resistor voltage dividers - generating voltmeters and field sensors - the measurement of peak voltages, the Chubb–Fortescue method, high- voltage capacitors for measuring circuits - voltage dividing systems and impulse voltage measurements, generalized voltage generation and measuring circuit, voltage dividers, interaction between voltage divider and its lead, the divider’s low-voltage arm - digital recorders, errors inherent in digital recorders

6.      High voltage testing: Testing of insulators and bushings, testing of isolators and circuit, Breakers testing of cables, testing of transformers - testing of surge diverters - radio interference measurements - design, planning and layout of high voltage laboratory .

Syllabus of SUB : Power system opration and control For Mid Sem_Exam_March _2018

Chapter 1 Automatic Generation and Voltage Control: Full
Chapter 2 Power System Security:    Full
Chapter 3 Reactive Power and Voltage Control:  Full 

Mid sem Exam Time Table March_2018

MID SEM TEST SYLLABUS

SUBJECT : DESIGN OF DC MACHINES AND TRANSFORMER

SUBJECT CODE : 2160912

SEMESTER : 6^TH

(1)GENERAL DESIGN ASPECTS:

Specific  electric  loading  and  Specific  magnetic  loading;  Output

coefficient;  Output  equations for  transformers and rotating machines;

Factors  affecting  size  of  machines;  Criteria  for  selection  of  specific

loadings;

Heating and Cooling of Transformers and rotating machines.

(2)DESIGN OF THREE PHASE TRANSFORMER:

Types

of

transformers;

Position  of

HV

and  LV

windings

and

its

importance; Relation between core and yoke cross section area and its

significance; Different types of transformer windings; Different positions

of taping; Window space factor; Factors affecting window space factor;

Relation between emf per turn and transformer rating; Stacking factor.

MAIN DIMENSIONS:

Design  of  window  dimensions,  yoke  dimensions  and  overall  core

dimensions; Numerical examples.

DESIGN OF WINDINGS:

Design of HVand LV windings (No. of turns and area of cross section);

Selection of type of winding.

(3)DESIGN OF DC MACHINES:

Introduction; Output equation; MMF calculation; Selection of number of

poles; Design of core length and armature diameter; Carter’s fringing

curves  and  its  significance;  Design  of  length  of  air  gap;  Numerical

examples.

ARMATURE DESIGN:

Choice of armature winding; Armature conductor; Number of armature

slots; Slot dimensions; Slot loading; Design of

armature core; Numerical

examples.