DC Generator MCQ Questions

1. In a DC generator, the ripples in the generated DC are reduced by employing (a) commutator with large number of segments. (b) equalizer rings. (c) carbon brushes. (d) graphite brushes. 2. In order to ascertain whether a DC machine is lap wound or wave wound on the basis of visual observations of the armature, […]

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DC Motor Question Bank

1. In an electromechanical energy conversion devices (e.g. generators and motors) a small air gap is left between the stator and the rotor in order to (a) reduce the reluctance of the magnetic path. (b) increase flux density in the air gap. (c) permit mechanical clearance. (d) avoid saturation of field. 2. The EMF induced

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MCQ Questions on Electromagnetism

1. The magnetic susceptibility of a paramagnetic material is (a) less than zero (b) less than one but positive (c) greater than one (d) equal to zero 2. Air exhibits (a) ferromagnetism (b) paramagnetism (c) antiferromagnetism 3. Soft magnetic materials have (a) high permeability and low coercive force (b) low permeability and high coercive force

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MCQ on Lead Acid Battery

1. Internal resistance of primary cell varies (a) inversely with the distance between electrodes (b) inversely with the surface area of electrodes (c) directly with the distance between electrodes (d) with the nature of electrodes (e) all of above except (a) 2. If the battery has zero internal resistance and the external resistance R is

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Basic Electrical Engineering MCQ

1. Ohm’s law cannot be applied to the circuits consisting of (a) electronic tubes or transistors (b) non-linear elements (c) powdered iron, electric arc etc. (d) all of the above. An electric circuit, whose characteristics or properties are same in either direction (e.g. a distribution or transmission line) is called the bilateral circuit. An electric

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Electrical Drives Quiz

1. The specific energy consumption of a train depends on which of the following? (a) Acceleration and retardation (b) Gradient (c) Distance covered (d) All of the above 2. The friction at the track is proportional to (a) 1/speed (b) speed (c) 1/speed2 (d) none of the above 3. The air resistance to the movement

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