Anna University Model Question Paper : TANCET Exam Chennai

Name of the Organaisation : Anna University (annauniv.edu)
Type of Announcement : TANCET Exam Model Question Paper ECE

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PART 05 – ELECTRICAL, ELECTRONICS, COMMUNICATION ENGINEERING AND INSTRUMENTATION
(Answer ALL questions)
1. How much energy is stored by a inductance with a current of 1 A?
1. 100 J
2. 1 J
3. 0.05 J
4. 0.01 J
2. If a network contains B branches and N nodes then the number of mesh current equations would be
1. B – N – 1
2. B-(N-1)
3. N-(B-1)
4. (B+N) -1
3. the current
1. leads the applied voltage
2. lags behind the applied voltage
3. is in phase with the voltage
4. is in quadrature with the voltage
4. In a certain series RC circuit, the true power is 2 W and the reactive power is 3.5 VAR. What is the apparent power?
1. 3.5 VA
2. 2 V A
3. 4.03 VA
4. 3 V A
5. A sine wave voltage is applied across an inductor when the frequency of voltage is increased, the current
1. increases
2. decreases
3. remains the same
4. is zero
6. In d.c generator in case the resistance of the field winding is increased then output voltage will
1. increase
2. decrease
3. remain unaffected
4. fluctuate heavily
7. D.C. motors are widely used in
1. Pumb sets
2. Air compressors
3. Electric traction
4. Machine shops
8. The starting winding of a single-phase motor is placed in
1. armature
2. field
3. rotor
8. An over-excited synchronous motor takes
1. leading current
2. lagging current
3. both (1)and (2)
4. in phase current
9. In open loop the control action
1. depends on the size of the system
2. depends on system variables
3. depends on the input signal
4. is independent of the output
10. A controller is essentially a
1. Sensor
2. Clipper
3. Comparator
4. Amplifier
11. A signal flow graph is a
1. topological representation of a set of
1. parallel circuit
2. series circuit
3. series-parallel circuit
4. none of the above
12. A Norton’s equivalent is
1.parallel circuit
2. series circuit
3. series-parallel circuit
4. none of the above
13. A signal flow graph is a
1. topological representation of a set of
2. polar graph
3. log log graph
4. special type of graph to analyse modern control systems
14.When the gain margin is positive and the phase margin is negative, the system is
1. stable
2. unstable
3. stable or unstable depending on the system
4. undeterministic
15. The effect of adding poles and zeros can be etermined quicklybywhichoftheIn a network the number of tree branches following?
1.is equal to the number of links
1. Root locus
2. Nyquist plot
3. Bode plot
4. Nicholar chart

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