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.