How is motor speed changed ?
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By varying the field or armature voltage
With the following values : Ep = 208 VAC ; Es = 35 VAC ; Ip = 3.8 amps ; Is = 21.42 amps
, what is the efficiency of this transformer ?
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95 %
What is the power available from a 68 kVA transformer connected in open delta
configuration ?
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39.44 kVA
The secondary winding of an 11,000 volt to 220 volt transformer has 50 windings on
the secondary How many turns are on the primary winding ?
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2500 turns
In a separately - excited generator , where does field excitation current come from ?
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An external power source
What is the rotating speed of a three - phase 30 Hz 6 - pole motor ?
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600 rpm
Which of the following describes the most useful feature of the clamp - on ammeter ?
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Does not require that connections be disturbed
Which statement applies when a secondary winding is open ?
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The secondary resistance will be infinity
What is the direction of electron current flow ?
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Negative to positive
A ____ generator's pole pieces become excited by residual magnetism .
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By varying the field or armature voltage
With the following values : Ep = 208 VAC ; Es = 35 VAC ; Ip = 3.8 amps ; Is = 21.42 amps
, what is the efficiency of this transformer ?
,Give this one a try later!
95 %
What is the power available from a 68 kVA transformer connected in open delta
configuration ?
Give this one a try later!
39.44 kVA
The secondary winding of an 11,000 volt to 220 volt transformer has 50 windings on
the secondary How many turns are on the primary winding ?
Give this one a try later!
2500 turns
In a separately - excited generator , where does field excitation current come from ?
Give this one a try later!
An external power source
What is the rotating speed of a three - phase 30 Hz 6 - pole motor ?
, Give this one a try later!
600 rpm
Which of the following describes the most useful feature of the clamp - on ammeter ?
Give this one a try later!
Does not require that connections be disturbed
Which statement applies when a secondary winding is open ?
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The secondary resistance will be infinity
What is the direction of electron current flow ?
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Negative to positive
A ____ generator's pole pieces become excited by residual magnetism .
Give this one a try later!
