When the voltage remains constant and the resistance is increased in a series circuit, the flow of current ()
A、increases by the square of the original value
B、increases
C、remains the same
D、decreases
A、increases by the square of the original value
B、increases
C、remains the same
D、decreases
A、A.Low voltage protection circuit B、B.Non-renewable link fuse C、C.Renewable link fuse D、D.Low voltage release circuit
A、A.AC voltage to the armature B、B.AC voltage to the field C、C.DC voltage to the armature D、D.DC voltage to the field
A、the armature terminals of the motor should be connected in star formation when voltage of power supply is 380 B、the armature terminals of the motor should be connected in star formation when voltage of power supply is 220 C、both A and B are correct D、the armature terminals of the motor should be connected in reverse ways of A and B
A、Current and voltage may be in phase B、Current may lead the voltage C、Current may lag the voltage D、All of the above
A、A.open the generator circuit breaker B、B.switch the voltage regulator to “manual” C、C.decrease the field excitation to minimum D、D.reduce the load on the unit
A、The voltage drop across each resistor is the same B、The total current flow equals the reciprocal of the sum of the individual currents C、The total resistance equals the sum of the individual resistances D、The total voltage equals the sum of the individual voltages across each resistance