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DGVCL Exam Paper (11-12-2011)
DGVCL Exam Paper (11-12-2011)
At time t= 0+ , with zero initial condition, which of the following acts as a short circuit?
Capacitor
Conductor
Voltage source
Resistor
Capacitor
Conductor
Voltage source
Resistor
Answer
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DGVCL Exam Paper (11-12-2011)
The positive and negative sequence impedance of a transmission line are
Different
Equal
Zero
Infinite
Different
Equal
Zero
Infinite
Answer
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DGVCL Exam Paper (11-12-2011)
The picture on the monitor of a computer is made up of tiny coloured dots called
Points
Pixels
Spots
Icons
Points
Pixels
Spots
Icons
Answer
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DGVCL Exam Paper (11-12-2011)
DC series motors are best suited for traction work because
Its torque is proportional to the square of the armature current and speed is inversely proportional to torque
Torque and speed are proportional to the square of the armature current
Torque and speed are inversely proportional to the square of the armature current
Its torque is proportional to the square of the armature current and speed is directional proporational to torque
Its torque is proportional to the square of the armature current and speed is inversely proportional to torque
Torque and speed are proportional to the square of the armature current
Torque and speed are inversely proportional to the square of the armature current
Its torque is proportional to the square of the armature current and speed is directional proporational to torque
Answer
Explanation
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Torque in d.c motor = k* φ * Ia
In series motor φ α Ia
Tα I²
N α 1/φ
N α 1/T
DGVCL Exam Paper (11-12-2011)
If the voltage at the two ends of a line are 132 kV, and its reactance is 40 Ω, the stability limit of the line is
500 MW
435.6 MW
217.8 MW
251.5 MW
500 MW
435.6 MW
217.8 MW
251.5 MW
Answer
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