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Basic Electrical Engineering MCQ_57_1 (Earthing)
Q.1 Plate earthing and pipe earthing are used where the soil is___. A. Comparatively rocky B. Comparatively soft C. comparatively sandy D. all of the above Ans.: B Q.2 The value of the earth resistance decreases Read More …
Basic Electrical Engineering MCQ_57(Earthing)
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Basic Electrical Engineering MCQ_56_1 (Earthing)
Q.1 In plate earthing, the size of copper plate _____ is used. A. 300 mm x 300 mm x 3 mm B. 100 mm x100 mm x 1 mm C. 600 mm x 600 mm x 3 Read More …
Basic Electrical Engineering MCQ_55_1(Earthing)
Q.1 What is earth current? A. The current dissipated by the earth electrode into the ground B. the current at time of earth fault C. the current at which the protective system operated D. all of Read More …
Basic Electrical Engineering MCQ_53(Earthing)
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Basic Electrical Engineering MCQ_54 (Earthing)
Q.1 The minimum current a human can feel is approximately equal to __. A. 5 mA B. 1 mA C. 10 mA D. 15 mA Ans.: B Q.2 The perception of electric shock can be depends Read More …
Basic Electrical Engineering MCQ_54(Earthing)
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Basic Electrical Engineering MCQ_53_1(Earthing)
Q.1 What are the objectives of earthing? A. It provides a path for discharging and de-energizing equipment to carry out maintenance on the equipment B. protection of human and animals life by controlling touch and step voltage to Read More …
Basic Electrical Engineering MCQ_52_1 (Electromagnetism)
Q.1 The portion of power lost corresponds the difference between the energy stored and the energy returned back by the magnetic core. This is called as___. A. hysteresis loss B. eddy current loss C. power loss Read More …