WorksheetsSANTOSH KUMAR MOHARANA
Total questions: 10
Worksheet time: 8mins
What energies does the Solar energy compose of?
Light and Heat energy
Wind and hydro energy
Chemical and fuel energy
Fossil and charcoal energy
Which rule is used to find the direction of induced emf in a DC generator?
Cork screw rule
Right hand palm rule
Fleming's left-hand rule
Fleming's right hand rul
What is the formula to calculate back emf of a D.C motor?
(A) Eb = V / Ia Ra Volts
B) Eb = V x Ia Ra Volts
(C) Eb = V – Ia Ra Volts
(D) Eb = V + Ia Ra Volts
Which energy is converted into electrical energy by generator?
(A) Heat
(B) Kinetic
(C) Chemical
(D) Mechanical
Which rule is used to find direction of the magnetic field?
(A) Cork screw rule
(B) Right hand palm rule
(C) Fleming’s left hand rule
(D) Fleming’s right hand rule
How many parallel paths in duplex lap winding of a 4 pole Dc Generator?
(A) 4
(B) 6
(C) 8
(D) 12
How are interpoles connected in a DC generator?
(A) In series with armature
(B) In parallel with armature
(C) In series with shunt field
D) In parallel with shunt field
Which are the two points that the brush contact resistance measured in D.C machines?
(A) Resistance between the opposite brushes
(B) Resistance between brush and commutator raiser
(C) Resistance between brush and commutator
(D) Resistance between brush and armature conductors
What is the name of the compound generator, if the shunt field is connected in parallel with the armature?
(A) A Long shunt compound
(B) B Cumulative compound
(C) Differential compound |
(D) Short shunt compound
Why is the armature core of a DC generator laminated?
(A) Reduce the copper loss
(B) Reduce the friction loss
(C) Reduce the hysteresis loss
(D) Reduce the eddy current loss
