1. What are the disadvantages of repulsion motor? Speed variations with the variations in load dangerously high at no load. Low power factor, except at high speeds. Requires frequent maintenance. Higher cost. Sparking at the brushes. 2. What are the applications of universal motor? Sewing machines High speed vacuum cleaners Electric typewriters Electric shavers Motion
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There are 12 behaviors or characteristics that successful quality leaders demonstrate. They give priority attention to external and internal customers and their needs. Leaders place themselves in the customers shoes and service their needs from that perspective. They continually evaluate the customers changing requirements. They empower, rather than control, subordinates. Leaders have trust and confidence
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1. What is the principle of an alternator? The alternator works on the principle on the Faraday’s law of electromagnetic induction. Whenever a conductor links with a magnetic field, either the conductor is moving, or the field is moving, an emf is induced in the conductor. 2. What are the different types of alternators? Which
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1. What are the advantages of three-phase induction motor? Simple construction High reliability Rugged construction High efficiency Low cost Less maintenance Self starting torque Good power factor. 2. What are the disadvantages of three phase induction motor? The speed is not constant with load. Reduction in efficiency when speed is varied. Low starting torque compared
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