For a D.C. machines laboratory following type of D.C. supply will be suitable

Related MCQs

• Satisfactory commutation of D.C. machines requires
• In case of D.C. machines, mechanical losses are primary function of
• Brushes of D.C. machines are made of
• Two D.C. shunt generators, each with armature resistance of 0.02 ohm and field resistance of 50 ohm run in parallel and supply a total current of 1000 amperes to the load circuit. If their e.m.fs. are 270 V and 265 V, their bus bar voltage will be
• Solid type cables are considered unreliable beyond 66 kV because
• Which of the following could be lamina-proximately the thickness of laminations of a D.C. machine ?
• Which of the following statement about D.C. generators is false ?
• Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator ?
• The voltage drop for which of the following types of brush can be expected to be least ?
• Following D.C. generator will be in a position to build up without any residual magnetism in the poles