Question Banks for CEE for MID SEM EXAM (8TH SEM)

Question Banks for CEE for MID SEM EXAM (8TH SEM)
1	Draw DY1 & DY11 type transformer connections & state feasibility of connecting them in parallel with reason
2	Explain polarity test of power transformer
3	Explain meaning of insulation resistance. How is it measured for power transformer
4	Define a burden on a CT. What are the markings on primary & secondary terminal CTs? How the polarity of CT is determined.
5	Explain various troubles, causes & remedies of 3 phase induction motors
6	What is ‘slip’ of an Induction motor? How can you measure the slip of an induction Motor?
7	Explain starting test & No load test on 3-phase induction motor.
8	Explain Back to back test on DC Machine
9	Explain Field test on DC Machine
10	Explain tan delta test.
11	Explain procedure for determination of polarization index for transformer
12	Explain procedure for drying out of transformer.
13	Explain behavior of 3 phase induction motor under abnormal frequency condition and under single phasing condition.
14	How could you measure DC resistance of 3 phase induction motor?
15	Give reasons and remedial steps for 3 phase slip-ring induction motor for following conditions: 1) Motor fails to start. 2) Motor runs slow. 3) Motor runs hot.
16	Explain polarity test, ratio checking test and phase sequence test on potential transformer.
17	Enlist mechanical and electrical test required before commissioning of dc machine. Also write condition for normal working of the dc machine.
18	Explain Growler and drop test by voltmeter for finding fault location in armature winding.
19	List out the various tests on transformer. Explain temp. Rise test for same.
20	Explain power frequency and impulse voltage withstand test on three phase distribution transformer
21	Explain the purification and filtration process of transformer oil.
22	Give causes, consequences and remedies for the following abnormal conditions of 3-phase induction motor. 1. Overheating 2. Stalling 3. Excessive speed.
23	State the methods of measurement of slip of induction motor. Also explain any one in detail.
24	Explain procedure for conducting Full load test on 3-phase induction motor. Also analyze characteristics of diff. parameters with curves.
25	What is the necessity of drying of electrical equipment? Explain polarization index of 3-phase induction motor.
26	Explain the significance of following in performance of electrical equipments. 1. Interpoles in d.c. m/c 2. Partial discharge test on transformer 3. Insulation co-ordination in sub station
27	Explain the causes of various troubles with commutator and brush gear in d.c. machines. Give remedies for same
28	Define Degree of Protection of Induction Motor.Explain I.P. and I.C. codes for same.
29	Explain purposes for performing No-load and Blocked rotor tests on 3-ф induction motor.
30	State the properties of good transformer oil? Explain BDV test on transformer oil.
31	List out the commissioning tests on power transformer. Explain the Voltage ratio test with the help of circuit diagram.
32	Explain drying out procedure of a 3-ф induction motor
33	For the following conditions explain in detail troubles, causes and its remedies for 3-ф squirrel cage induction motor. i) Motor fails to start ii) Motor runs at 1/7th synchronous speed. iii) Motor heats up
34	State different tests to be performed on DC machine for efficiency determination. Which test is best out of all on DC shunt motor? Justify your answer.
35	Differentiate between type and routine test. Explain any two routine test of Power transformer with necessary circuit diagram.
36	Explain the Troubleshooting and Maintenance of induction motor.
37	Explain the significance of Polarization Index Number. Explain drying out procedure of Power Transformer.
38	Explain the Phase group of Power Transformer with necessary vector and winding diagram.
39	Explain variation of voltage and frequency on performance of Induction motor.
40	Explain Hopkinson’s Test of D.C.Machines.
41	Explain the following test regarding transformer (1) Polarity test (2) Loss measurement (3) Power frequency with stand test.
42	What is the significance of polarity in case of current transformer? How can we test the polarity of C.T?
43	How the D.C/A.C resistance, insulation resistance and block rotor test can be performed on three phase induction motor?
44	What is the significance of partial discharge measurement and Tan Delta test in case of transformer?
45	How can we find Dy1 & Dy11 connection in the case of transformer?
46	How can you find out the polarity test in case of three phase power transformer and what is the significance of it? Can we connect Dy1 & Dy11 transformer in parallel? Give your reason.
47	Explain noise measurement, vibration measurement and slip measurement in case of three phase induction motor.

7th sem backlog students

VIVEK K RAVAT	120140109126
JADAV PIYUSH LAKHAMANBHAI	120140109073
PATEL NIKUNJ AMRUTBHAI	120140109091
SONALKUMARI BHAVSINH RATHWA	110140109125
PATEL PINKALKUMAR DAYALJIBHAI	90140109119
VASAVA RAHULKUMAR MALJIBHAI	100140109107
VASAVASATISHKUMAR KANTIBHAI	130143109028
Surti Arpit	110143109020

above students are strictly inform to meet HOD electrical upto 14th march 2016. 

4Th-Semester-Electrical [(A C Machine(2140906)]                           Prepare PPT for following Topic , Group will be as per serial number of enrollement number of 5 student
Group No.	Name of Topic
1	Construction, Types of motor, Working principle, Rotating magnetic field. Of Three phase induction motor
2	Operating parameters at different load
3	No-load & blocked rotor test, Equivalent circuit, Phasor diagram, Circle diagram, Efficiency and slip scale with the help of circle diagram,
4	Effect of rotor resistance on performance of motor, Double cage motor and its equivalent circuit
5	Starters of poly-phase induction motor  including soft  starter
6	Methods  of  speed  control  of  3- phase motor, Schematic diagram and advantages of Variable Voltage Variable Frequency drive
7	Electrical transients in induction machine, Magnetic
8	levitation : Principle, advantages and application of linear induction motor
9	Effect of harmonics,  Harmonic torques, Cogging & Crawling,
10	Effect of unbalanced voltages on performance of motor
11	Performance of motor with variable voltage and  frequency
12	Testing of induction motor as per IS, Energy efficient motors.
13	Principle of operation and application of Induction Generator,Its load and p. f. control
14	Double field revolving theory, Equivalent circuit
15	Starting & running performance of 1- phase induction Motor
16	Types of single phase motors,Equivalent circuit of 1phase induction motor,
17	Principle and operation of split phase, Resistance start,   Capacitor start and capacitor start & run induction motor, Shaded pole induction motor, Fractional horse power motors
18	Construction, Types, Applications, Working principle,
19	Equation of induced emf with and without harmonics in MMF, pitch factor and distribution factor, MMF of distributed windings, Torque equation, Machine efficiency
20	Effect of change in torque  and  speed,  Voltage  regulation,Long Term Load Predictions Using Econometric Models, Reactive Forecast.
21	Determination  of voltage regulation by Synchronous impedance method, MMF method, ZPF method and AIEE method,.
22	Synchronization : Importance and Methods of  synchronization
23	Operating  characteristic,  Load  angle  and  Power flow equations, Capability curves
24	Two reaction model of Salient pole machines, Parallel operation, Load sharing between parallel connected generators
25	Effect of   unequal voltages & unequal percentage impedance, Governor characteristics
26	Introduction to single phase generators, Slip test for measurement of direct axis and quadrature axis reactance for salient pole machine
27	Sudden short circuit of Synchronous machine, Hunting of synchronous machines and its prevention.Methods  of  starting  of  synchronous  motors,
28	Different  torques  in Synchronous motor, Stability
29	Synchronous condenser, Synchronous phase modifiers,V-curves and inverted V-curves of Synchronous motors
30	Construction, principle of operation, equivalent excitation current for various rotor connections of Auto Synchronous Motor
31	Construction and working principle of Schrage motor,Universal motor,Repulsion motor

List of Less attendance in the

 subject  :  A C  Machines  (4^Th– Semester  Elect)

140140109005,007,009,10,22,25,34,35,36,51,62,67,68,69,72,73,74,77,82,83,84,86,88,92,93,94,96,97,98,102,105,106,111,112,115,117

150143109011,20,21,22,23,26

Subject co-ordinator

Prof. V. G. Bhuva

Field Theory (2140909) Tutorial

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List of Less Attendance in Subject Field Theory for February Month

130140109064,

140140109005,007,009,10,15,16,17,18,22,23,28,033,34,36,37,40,41,50,51,52,53,54,55,61,62,67,68,69,72,73,74,77,82,83,84,86,88,92,93,94,96,97,98,102,105,106,111,112,115,117

150143109011,20,21,22,23,26

Important notice for 6th Semester Electrical Students

All the 6th semester students are hereby informed to compulsorily remain present on 5/3/16 their  seminar PPT presentation of their topic of interest(From 6th semester subjects). Students are instructed to take this seriously and strict action will be taken in case of absenteeism.


By Order

H.O.D

Reschedule of classes against dates 24/2/16 and 25/2/16 on working saturdays

All the students must see below mentioned notices for reschedule of teaching for all the semesters(2,4,6,8) as follows. All the students must remain compulsorily present and attend classes. Strict action will be taken in case of absenteeism.

 

Project seminar and demonstration on 4/3/16

All the final Year students are hereby informed to present a seminar on their project on 4/3/16. All students must also show progress/status of Hardware/software/simulation till date. All the students must remain present as internal evaluation will be carried out by their respective guides. All Students shall also start preparing their final project report. They are also advised to complete all the necessary tasks as required by G.T.U related to PMMS system from time to time.




By Order

List of BE(elect) 4 sem probable detention list. Students are immediately instructed to attend the classes regularly.