WorksheetsDC GENERATOR
Total questions: 27
Worksheet time: 14mins
DC Generator converts --------------------energy into ----------energy.
mechanical, electrical
electrical, mechanical
kinetic, mechanical
potential, electrical
DC Generators works on the ---------- principle
Lenz's law
Lorentz Law
ohm's law
Faraday's law of ElectromagneticInduction
Yoke is made of -------------material.
silicon steel
carbon steel
Cast iron or cast steel
plastic
EMF equation for DC generator is -------------
Eg = PΦNZ / 120A
Eg = PΦNZ / 60A
Eg = PΦNA / 60Z
Eg = PΦNZ / 160A
Which part is converts AC into DC in the DC generator?
yoke
Brush
Bearings
commutator
The induced current in the DC generator can be found by ---------
Faraday's law
Fleming's Right Hand Rule
Ohm's law
Lowrent'z law
Eg = PΦNZ / 60A what is Z?
Impedance
Armature Conductor
field winding
field coil
Speed (N) is measured by ------
RPM
second
Minutes
KM
WHICH TYPE OF DC GENERATOR HAS TWO FIELD WINDINGS?
SERIES
SHUNT
COMPOUND
What it is?
Armature
Commutator
Brush
Magnet
What is the main part shown in the picture?
spring
carbon brush
copper brush
copper lug
This is a....................DC generator
Self Exicted
Seperately Excited
Permanent Magnet
none
field coils are internally connected with the armature in .....
none
seperately excited
permanent magnet
self excited
This is a....................DC generator
Self Exicted
Seperately Excited
Permanent Magnet
none
According to the ............................self-excited DC generators can be classified .
position of the armature coils
Position of Commutator
position of the field coils
none
This is a....................DC generator
Series Wound
shunt wound
compound wound
none
whole current flows through the field coils as well as the load in ........generator
Series Wound
Shunt Wound
Compound Wound
all the above
the voltage in the field winding is same as the voltage across the terminal in ............generator
Series Wound
Shunt Wound
Compound Wound
all the above
Compound wound generators have
series winding
shunt winding
series & shunt winding
none
In ..............generators ,shunt field winding is in parallel with both series field and armature winding
short shunt compound wound generator
long shunt compound wound generator.
short short compound wound generator.
long long compound wound generator.
This is a ...........generator
short shunt compound wound generator
long shunt compound wound generator.
short short compound wound generator.
long long compound wound generator.
Flux due to stator poles called
Main flux
armature flux
both main & armature flux
all the above
Flux due to current in armature called
Main flux
armature flux
both main & armature flux
all the above
ARMATURE REACTION is
none of these
mutual action between armature & stator
mutual action of main field flux on the armature flux
mutual action of armature flux on the main field flux
