CIRCUIT THEORY -IMPORTANT TOPICS FOR ALL FIVE UNITS -by R.Anirudhan



CIRCUIT THEORY
IMPORTANT TOPICS FOR ALL UNITS :< IMPORTANT QUESTIONS WILL BE UPLOADED SOON  >
UNIT – 1
1.     ANALYSIS OF SERIES AND PARALLEL CIRCUITS <16 MARKS>
2.     FINDING THE EQUIVALANT RESISTANCE OR CURRENT  IN  THE CIRCUIT <8 0R 16 MARKS >
3.     MESH CURRENT METHOD <16 MARKS >
4.     NODE VOLTAGE METHOD <16MARKS >
5.     STAR –DELTA TRANSFORMATION DERIVATION AND PROBLEMS FROM THIS <8 OR 16 MARKS >
UNIT -2
1.     PROBLEMS FROM SUPERPOSITION THEOREM < 8 OR 16 MARKS >
2.     PROBLEM FROM THEVENIN'S THEOREM , NORTAN THEOREM < 8 OR 16 MARKS >
3.     PROBLEMS FROM MAXIMUM TRANSFER THEOREM , RECIPROCITY THEOREM <8 MARKS>
UNIT -3
1.     DERIVE THE EXPRESSION FOR MAXIMUM VOLTAGE ACROSS L AND C. <16 MARKS >
2.     DERIVE THE EXPRESSION FOR RESONANT FREQUENCY AND BANDWIDTH OF A SERIES RESONANT CIRCUIT
3.     DERIVE THE EXPRESSION FOR THE HALF POWER BANDWIDTH OF THE PARALLEL RESONANT CIRCUITS.
4.     DERIVE MAGNETIC COUPLING COEFFICIENT(K)  <16 MARKS >
5.     DERIVE THE EXPRESSINOS FOR EQUIVALENT INDUCTANCE OF TWO COILS IN SERIES AND PARRELLEL WITH
1. SERIES AIDING
2.  SERIES OPPOSITION
3. PARALLEL AIDING
4. PARALLEL OPPOSITION <16 MARKS >
1.     WRITE A NOTE ON DOT CONVERSION <8 MARKS >
2.     PROBLEMS FROM FINDING RESONANT FRQUENCY, BANDWIDTH , IMPEDANCE OF THE CIRCUIT AT GIVEN FRQUENCY ,CURRENT UNDER RESONANCE CONDITION.
UNIT -4
1.     DERIVE THE EXPRESSION FOR STEP RESPONSE OF DRIVEN SERIES R-C AND R-L CIRCUITS <16 MARKS>
2.     WRITE A NOTE ON UNDERDAMPED, OVERDAMPED,CRITICALLY DAMPED SYSTEM <16 MARKS >
3.     DEFINE AND EXPLAIN THE CHARACTERISTICS OF
A.  UNIT STEP FUNCTION
B. UNIT RAMP FUNCTION
C.  UNIT IMPULSE FUNCTION <16 MARKS >
UNIT -5
1.     EXPLAIN THE TWO WATTMETTER METHOD OF MEASUREMENT OF THREE PHASE POWER AND IT EFFECTS  WITH A NEAT DAIGRAM AND WRITE ITS ADVANTAGES.   <16 MARKS >
2.     PROBELMS TO FIND ACTIVE POWER, REACTIVE POWER, TOTAL ACTIVE POWER, POWER FACTOR OF LOAD
3.     WHAT ARE THE DIFFERNT METHODS OF THREE PHASE POWER MEASUREMENT ? EXPLAIN THEM IN DETAIL <16 MARKS >
4.     DERIVE THE RELATIONSHIP BETWEEN A LINE CURRENT AND A PHASE CURRENT AND A LINE VOLTAGE AND A PHASE VOLTAGE RELATED TO A STAR CONNECTED AND DELATA CONNECTED LOAD. <16 MARKS >
5.     WITH THE HELP OF CONNECTION DAIGRAM AND PHASOR DAIGRAM, SHOW THAT TWO WATTMETERS ARE SUFFICIENT TO MEASURE THE ACTIVE POWER IN A THREE PHASE THREE WIRE SYSTEM WITH,
A.    BALANCED STAR CONNECTED LOAD
B.     BALANCED DELTA CONNECTED LOAD



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