SANTOSH KUMAR MOHARANA

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