Anna University ME or M.Tech ECE Entrance Sample Papers

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[Arun Vats]

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How much energy is stored by a 100

81. A shunt generator running at
inductance with a current of 1 A? has generated as 2 0 0 V. If the speed
1. 100 J
2. 1 J
77. If a network contains B branches and
N nodes then the number of mesh current
equations would be
2.
B - N – 1

78.
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

79. 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
increases to 1200 rpm, the generated emf
will be nearly
4. 2 9 0 V

82. In a generator in case the resistance of
the field winding is increased then output
voltage will
1. increase
2. decrease
3. remain unaffected
4. fluctuate
83. D.C. motors are widely used in
1. sets
2. Air compressors
3. Electric traction
4. Machine shops

84. The starting winding of a single-phase motor
is placed in
1. armature
2. field
3. rotor

80. 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

85. An over-excited synchronous motor takes
1. leading current
2. lagging current
3. both (1)and (2)
4. in phase current