Saturday, 4 March 2017

QUESTION BANK FOR CEE(8TH SEM) FOR MID-1



Note: This question bank covers imp questions for your reference only, it does not cover by any means the entire syllabus. It is always advisable to refer regular text books/reference books for covering all the topics as per revised syllabus. 

All the best for the best performance in MID-1.


Question Banks for CEE  (8TH SEM) For MID SEM-1 (MARCH 2017)
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 the procedure of high voltage tests on rotating machine.
11 Explain open circuit test & short circuit test on a synchronous machine.
12 Explain power frequency voltage withstand test, impulse voltage withstand test on transformer.
13 What is Earth resistance of earthing system? Explain procedure of earth-resistance measurement of an earth electrode. What are the maximum permissible values?
14 Explain retardation test on synchronous machine on load & on no load
15 Explain Breakdown voltage (BDV) test of Transformer oil & State properties of Transformer oil
16 Write short note on significance of system earthing. Differentiate between resistance grounding and solid grounding.
17 Explain tan delta test.
18 Explain procedure for determination of polarization index for transformer
19 Explain procedure for drying out of transformer.
20 Explain procedure for drying out of Induction motor.
21 What do toy mean by I.P Code and I.C Code for Induction motors.
22 Explain behavior of 3 phase induction motor under abnormal frequency condition and under single phasing condition.
23 Explain dc charge and discharge test to find discontinuity of cable conductor
24 How could you measure DC resistance of 3 phase induction motor?
25 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.
26 Give commissioning steps for synchronous machine.
27 Explain polarity test, ratio checking test and phase sequence test on potential transformer.
28 Explain Growler and drop test by voltmeter for finding fault location in armature winding.
29 Explain importance of Partial discharge test in transformer. 
30 Explain with setup sketch, Impulse testing for power transformer.
31 List out the various tests on transformer. Explain temp. Rise test for same.
32 Explain power frequency and impulse voltage withstand test on three phase distribution transformer
33 Explain the purification and filtration process of transformer oil.
34 Give causes, consequences and remedies for the following abnormal conditions of 3-phase induction motor. 1. Overheating 2. Stalling 3. Excessive speed.
35 State the methods of measurement of slip of induction motor. Also explain any one in detail.
36 Explain procedure for conducting Full load test on 3-phase induction motor. Also analyze characteristics of diff. parameters with curves.
37 What is the necessity of drying of electrical equipment? Explain polarization index of 3-phase induction motor.
38 What is diff. between system earthing and structure earthing ? Explain with diagram, measurement of earth resistance in substation.
39 Explain short circuit testing on circuit breaker with plant layout.
40 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
41 Explain the causes of various troubles with commutator and brush gear in d.c. machines. Give remedies for same
42 Define Degree of Protection of Induction Motor.Explain I.P. and I.C. codes for same.
43 Explain the testing of Voltage Regulators and Excitation Circuit of Synchronous Generator.
44 Explain procedure for high voltage testing on electrical equipments.
45 Explain purposes for performing No-load and Blocked rotor tests on 3-ф induction motor.
46 State the properties of good transformer oil? Explain BDV test on transformer oil.
47 List out the commissioning tests on power transformer. Explain the Voltage ratio test with the help of circuit diagram.
48 Explain drying out procedure of a 3-ф induction motor
49 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
50 What is earth resistance? Explain how earth resistance in substation is measured?
51 Explain charging current making and breaking tests on an isolator.
52 State importance of polarity test on CTs. Explain polarity test for CT with circuit diagram.
53 How bar-to-bar test is performed on DC machine? State importance of this test.
54 Explain Mechanical endurance test on circuit breaker.
55 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.
56 State the importance of mechanical balance and magnetic balance in synchronous machine. How mechanical balance is measured?
57 Explain insulation resistance measurement for cable.
58 For the following conditions explain in detail troubles, causes and its remedies for synchronous machine.
59 i) Synchronous Generator fails to generate power. ii) Synchronous Generator generates unbalanced voltages. iii) Synchronous Motor fails to start.
60 Differentiate between type and routine test. Explain any two routine test of Power transformer with necessary circuit diagram.
61 Explain the Troubleshooting and Maintenance of induction motor.
62 Explain the significance of Polarization Index Number. Explain drying out procedure of Power Transformer.
63 Explain the Phase group of Power Transformer with necessary vector and winding diagram.
64 Explain charging current making and breaking test of isolator.
65 Explain variation of voltage and frequency on performance of Induction motor.
66 Explain Hopkinson’s Test of D.C.Machines.
67 Explain measurement of DC and AC Resistance of Armature and Field winding of synchronous machines.
68 Explain the different methods of earth resistance measurement
69 List out the necessary conditions of Synchronization. Draw the circuit diagram of synchronization of alternator with grid.
70 Explain Vibration and Noise measurement of synchronous machines.
71 Explain the following test regarding transformer (1) Polarity test (2) Loss measurement (3) Power frequency with stand test.
72 What is the significance of polarity in case of current transformer? How can we test the polarity of C.T?
73 How the D.C/A.C resistance, insulation resistance and block rotor test can be performed on three phase induction motor?
74 What is the significance of partial discharge measurement and Tan Delta test in case of transformer?
75 Draw Dy1 & Dy11 and DZ1 connection in the case of transformer?
76 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.     
77 Explain noise measurement, vibration measurement and slip measurement in case of three phase induction motor.
78 State the importance of polarity test on single phase and three phase Power and distribution transformer.
79 Write the difference between Power frequency voltage withstand and Induced voltage withstand test on transformer.
80 List out different methods of Substation earthing. Explain any one in detail.
81 Explain important design parameters for selection of appropreate earthing for substation/industries/commertial building/residential system.

GACL Campus Interview


GACL written test is postponed for the time being. New dates will be announced soon.

Wednesday, 1 March 2017

GACL Campus Interview for Current batch (8th Sem Electrical)


Following students shall remain well prepared for possible GACL campus- Technical written test for the post of GET(ELECTRICAL) which will be probably arranged on 05/03/2017 (Sunday), Venue may be either Vadodara or Dahej. It will be conveyed later on to you. Keep looking at Blog regularly. It is still tentative schedule. Exact date will be conveyed you soon.

List is as follows..


 (8 TH SEM ELECTRICAL) CURRENT 2016-17 BATCH 
Sr. No. Enrolment No. Contact No. CPI % (Up to 7th Sem)
FULL NAME
1 130140109043 RUKSARPARVEEN  SAMIULLA  MALEK 7405113845 8.86 83.6
2 130140109049 DHRUVKUMAR  PRAKASHCHANDRA  MODH 9408209097 8.8 83
3 130140109002 ANKIT   ALOK    GARWAL 8140932237 8.74 82.4
4 130140109048 KRUNAL  NILESHBHAI  MODASIYA 9601030548 8.69 81.9
5 130140109007 RAVIKUMAR  NILESHKUMAR  BUMTARIYA 9638429290 8.57 80.7
6 140143109023 PARTH  NARAYANBHAI  SURYAVANSHI 9913024690 8.54 80.4
7 130140109045 MUAATASIM  MAHMADRAFIQ  MASTER 7405419418 8.53 80.3
8 130140109001 ANJALI  NARENDRAKUMAR  SHAH 7600968378 8.51 80.1
9 140143109011 DHARTI  BHARATKUMAR  PANCHOLI 9033130931 8.5 80
10 130140109032 HETA  VASUDEV  KADAM 9662105995 8.49 79.9
11 140143109003 PURVI  MUKESHRAO  GUJAR 8511801725 8.47 79.7
12 130140109068 KALPANA   GIRISHBHAI  PATEL 8347449661 8.41 79.1
13 130140109026 NITIN  DHIRUBHAI  HADIYA 7567939979 8.36 78.6
14 130140109118 JYOTI  VIJAYBHAI  VARIA 7405762752 8.33 78.3
15 130140109069 KRUPALI  PRAVINBHAI  PATEL 8511217127 8.32 78.2
16 130140109033 AMRINFATIMA  FARID  KAGZI 9687176790 8.29 77.9
17 130140109089 JAY  KAUSHIKKUMAR  RANA 9998001096 8.25 77.5
18 130140109035 MAHENDRA  MOHANBHAI  KHADELA 7567632738 8.24 77.4
19 140143109022 APEXA  DEEPAKKUMAR  SONI 8460197446 8.22 77.2
20 130140109087 JIGAR  RAJESHKUMAR  PUROHIT 7383224009 8.18 76.8
21 130140109114 SATISH   SHYAMSUNDAR  TRIPATHI 9376211413 8.12 76.2
22 130140109103 KUNAL  SHAILENDRA  SHRIVASTAV 7878766641 8.07 75.7
23 130140109041 MANSI  HEMANTBHAI  MAKADIYA 8238864326 8.04 75.4
24 130140109044 JAYDIP  NARESHBHAI  MARU 8460385519 8 75
25 140143109008 HIREN  CHETANBHAI  KHATRI 9727347784 8 75
26 140143109027 SUSHMITA BEN  MAHESHBHAI  VASAVA 9879929555 8 75
27 130140109054 VRUND  VIPULBHAI  PANDYA 8238350079 7.97 74.7
28 130140109027 KAJAL  VIJAYBHAI  JADHAV 8401370663 7.96 74.6
29 130140109030 VISMAY  NILESH  JHAVERI 7874821496 7.94 74.4
30 140143109010 PRADHUMANSINH  BHADRASINH  PADHIYAR 9904819958 7.94 74.4
31 130140109050 RAVIKUMAR  VINODKUMAR  MODH 8866982528 7.91 74.1
32 130140109028 MITALI  NARESHBHAI  JAIN 8511509547 7.88 73.8
33 130140109017 DHRUV  MITESHBHAI  DESAI 9558400247 7.86 73.6
34 130140109046 ASHOKKUMAR  MAHESHBHAI  MISTRY 9173469205 7.86 73.6
35 130140109083 HIMANEE  VINODBHAI  PRAJAPATI 7698545035 7.86 73.6
36 130140109051 PRAHLADSINH  RAYSINH  PADHIYAR 8238991600 7.85 73.5
37 130140109084 NIKUNJ  NILESHBHAI   PRAJAPATI 8866227397 7.84 73.4
38 140143109014 NAYAN  RAMESHBHAI  PATEL 9586907680 7.78 72.8
39 130140109097 RAHUL  MANVARSINGH  RAWAT 8238609344 7.77 72.7
40 140143109019 MIHIRKUMAR  PRABHUDAS  SARVAIYA 9974247493 7.76 72.6
41 130140109053 PRATIKSHA  NAROTTAMBHAI  PANDAV 7698295094 7.69 71.9
42 130140109065 HEMANTKUMAR  JAYRAMBHAI  PATEL 9726228219 7.66 71.6
43 130140109055 DARSHANKUMAR  SANJAYKUMAR  PAREKH 8490999380 7.65 71.5
44 130140109102 DEEPAK  GORDHANBHAI  SHOBHANI 8735939141 7.63 71.3
45 140143109002 CHIRAGKUMAR  YOGESHBHAI  BHATT 8460171631 7.63 71.3
46 140143109024 HARSH  JANMEJAY  TRIVEDI 8128045569 7.63 71.3
47 130140109072 MEHUL  MUKESH   PATEL 7359992966 7.6 71
48 140143109004 PRIYANKA   JITENDRA  JHA  8690260088 7.6 71
49 140143109017 RAJDIPSINH  RAJENDRASINH  RANA 9724428948 7.59 70.9
50 130140109121 VIJAYANAND  RAJENDRAKUMAR  SAHU 9510383960 7.58 70.8
51 130140109015 MAYURKUMAR  RAMESHCHANDRA  DALVANI 8141797846 7.56 70.6
52 130140109037 KHUSHBU  VASANTBHAI  PARMAR 9586921400 7.56 70.6
53 130140109112 TANMAYKUMAR  KANTIBHAI  TALATI 9998633250 7.56 70.6
54 130140109071 MAYURKUMAR  RAMANBHAI  PATEL 9723073428 7.55 70.5
55 130140109018 SAGARKUMAR  MADHUBHAI  DHOLA 8758066403 7.54 70.4
56 130140109100 YASH  BHASKARBHAI  SHAH 7383607386 7.52 70.2
57 130140109034 SAGARKUMAR  UMESHKUMAR  KAYASTH 9428536915 7.5 70
58 130140109107 HITESHBHAI  MANUBHAI  SOLANKI 9714357430 7.5 70
59 140143109005 DIVYESHKUMAR  MANOJBHAI  KAYASTH 9712615425 7.48 69.8
60 130140109123 VISHWAKARMA  RAMESHBHAI  SALIL 8866778304 7.46 69.6
61 130140109075 ROMIKKUMAR  ASHOKBHAI  PATEL 7572869394 7.44 69.4
62 130140109058 MITESHKUMAR   JAYANTIBHAI  PARMAR 9408021032 7.43 69.3
63 130140109078 VAIBHAVI  DINESHBHAI  PATEL 9712553209 7.42 69.2
64 130140109006 DEVASHIBHAI  NAGAJANBHAI  BOKHIRIYA 7778958870 7.4 69
65 130140109086 PRIYADEVI  MAYANK  TIWARI 9427981779 7.39 68.9
66 130140109099 SMIT  RAJENDRAKUMAR  SHAH 7359308125 7.37 68.7
67 130140109124 KANJI  ARJANBHAI  ZALA 9274951551 7.35 68.5
68 130140109029 NITINKUMAR  SHASHIKANT  JARIWALA 7778996277 7.33 68.3
69 130140109106 KISHOR    RAMUBHAI  SISARA 9228293433 7.29 67.9
70 130140109090 TARANGBHAI  HEMANTKUMAR  RANA 8460828725 7.28 67.8
71 130140109093 YASHKUMAR  RAMESHBHAI  RATHOD 8347670090 7.27 67.7
72 130140109025 JAYDEEP  GOKULCHANDRA  GORAI 8140210216 7.27 67.7
73 140143109001 DHAVAL  GORDHANBHAI  BHARADAVA 9624282633 7.24 67.4
74 140143109018 MAYURKUMAR  HARSHADBHAI  SARVAIYA 8460559244 7.2 67
75 130140109073 MIT  KIRITBHAI  PATEL 9998004371 7.19 66.9
76 130140109113 BHAVIN   SHANTILAL  TANK 8264690694 7.17 66.7
77 130140109060 ROHAN  BHUPENDRABHAI   PARMAR 9601185061 7.16 66.6
78 140143109006 MOHAMMEDFARHAN   ABDULSALIM  KHALIFA 9723964793 7.15 66.5
79 130140109105 HARSH  LAKHUBHAI  SINDHAV 9099865293 7.11 66.1
80 130140109110 SATISHKUMAR  LAKHAMANBHAI  SOLANKI 9574076038 7.1 66
81 130140109031 ROHIT  RASIKBHAI  KACHHADIYA 7359393713 7.07 65.7
82 130140109070 MANTHAN  DILIPBHAI  PATEL 9033592011 7.05 65.5
83 130140109122 PIYUSH  VALLABHBHAI  VIROJA 9727575248 7.04 65.4
84 130140109011 MUKESHBHAI  BHIMAJIBHAI  CHAUHAN 9033677890 7.03 65.3
85 130140109108 NIRAV  ARVINDBHAI  SOLANKI 9426596081 7.03 65.3
86 140143109026 JAYESHBHAI  CHUNILAL  VASAVA 9714955655 7.03 65.3
87 140143109009 MITESHKUMAR   KANUBHAI  MAKWANA 8128607843 7.01 65.1
88 130140109003 SATISH  LAKSHMANBHAI   BARIYA 7359468486 7 65
89 120140109125 NITINKUMAR  PMBL BHAI  PANDOR 8511655477 6.98 64.8
90 130140109020 MILAN  ASHOKBHAI  DODIYA 9624188912 6.94 64.4
91 130140109019 KULDIP  RAMESHBHAI  DHOLARIYA 9426651476 6.91 64.1
92 130140109056 KANAKSINH  VAJUBHAI  PARMAR 8460372459 6.88 63.8
93 130140109047 PARTH  DALPATBHAI  MISTRY 8460761993 6.88 63.8
94 130140109014 DAKSHESH  KISHORBHAI  MASRANI 9723611788 6.87 63.7
95 140143109016 RAHUL  VINODBHAI  RAJPUT 9725059446 6.87 63.7
96 130140109088 NIMESH  VASRAMBHAI  RABARI 7383688197 6.86 63.6
97 130140109101 AAQUIBZAID  SHAFIQUE  SHAIKH 7777971576 6.86 63.6
98 130140109085 UTKARSH  RAJENDRAKUMAR  PRAJAPATI 8511353618 6.85 63.5
99 130140109092 PRATIKKUMAR  SURESHBHAI  RATHOD 9408836525 6.85 63.5
100 140143109020 VATSAL  KISHORBHAI  SHAH 9638834041 6.85 63.5
101 130140109082 BALVANTBHAI  SURESHBHAI  PRAJAPATI 8238894822 6.83 63.3
102 130140109036 SANKET  CHANDUBHAI  KHUMAN 8487015284 6.82 63.2
103 130140109076 RONALKUMAR  RASHMINBHAI  PATEL 7621018647 6.81 63.1
104 140143109013 JIGNESHKUMAR  JAGDISH  PARMAR 7359513410 6.81 63.1
105 130140109080 Piyush  Ramshiromani  Pal 9558749004 6.8 63
106 130140109023 JIGNESH  JAGDISHBHAI  GHETIYA 7622879253 6.78 62.8
107 130140109096 satishbhai  bansing bhai  rathwa 8141910279 6.72 62.2
108 130140109098 NIRVIT  HASMUKHBHAI  SAREEN 9409232820 6.62 61.2
109 130140109042 SHAILESH   MANSUKHBHAI  MAKWANA 8141582031` 6.61 61.1
110 130140109117 VISHAL   VALABHBHAI   VANAPARIYA 8154822926 6.58 60.8
111 130140109022 GAUTAMKUMAR  DESINGBHAI  RATHVA 9537026910 6.55 60.5
112 130140109104 SANJAYKUMAR  GHANSHYAMSINH  SINDHA 8238516417 6.55 60.5
113 140143109012 JAYESHBHAI  ALVESHVARBHAI  PANDYA 9904242317 6.55 60.5