Related Questions

In an unregulated power supply, if load current increases, the output voltage ___________
A Remains the same
B Decreases
C Increases
D None of the above
In an unregulated power supply, if input a.c. voltage increases, the output voltage .
A Increases
B Decreases
C Remains the same
D None of the above
A power supply which has voltage regulation of ___________ is unregulated power supply
A 0%
B 5%
C 10%
D 8%
When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a
A D-slide valve
B governor
C Meyer’s expansion valve
D flywheel
If in a synchronous motor, driving a given mechanical load and drawing current at a leading power factor from constant voltage supply its field excitation is increased, its power factor
A will become more
B will become less
C will remain unchanged
D none of the above.
If in a synchronous motor, driving mechanical load and drawing current at lagging power factor from constant voltage supply, its field excitation is increased, then its power factor
A become more
B become less
C remain constant
D none of the above
Unless they reverse present politices immdiatley the world may suffer permant damage from the unregulated use of pesticides
A Unless they reverse present policies
B Unbnless present present policies are reserved
C A & B both
D None
The no-load current drawn by transformer is usually what per cent of the full-load current?
A 0.2 to 0.5 per cent
B 2 to 5 per cent
C 12 to 15 per cent
D 20 to 30 per cent
“Maximum power output is obtained from a network when the load resistance is equal to the output resistance of the network as seen terminals of the load”. The above statement is associated with
A Millman’s theorem
B Thevenin’s theorem
C Superposition theorem
D Maximum power transfer theorem
A synchronous motor is running with normal excitation. When the load is increased, the armature current drawn by it increases because
A Speed of the motor is reduced
B Power factor is decreased
C Eb (back e.m.f.) becomes less than V (applied voltage)
D Er (net resultant voltage) in armature is increased

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