A fluorescent lamp tube is filled with a gas containing a mixture of mercury vapour and an inert gas. The gas pressure is 304Pa at 23°C. Determine the gas pressure at 95°C. (4 marks)craft1 electrical June/July 2020
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An air cored toroidal coil has 3000 turns and carries current 0.1 A. the length of the magnetic circuit is 30 cm and the cross-sectional area of the coil is 4cm^2. Determine the: (i) magnetic field strength; (ii) magnetic flux density. ...
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State Fleming’s right hand rule for electric generators. (3 marks)craft1 electrical June/July 2020
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one application of polarized light in electronics.(1 marks)craft1 electrical June/July 2020
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A technician at a battery manufacturing plant has a liquid bottle labelled “inorganic. acid”. Outline four chemical methods used to verify the properties of the liquid. (4 marks)craft1 electrical June/July 2020
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An industrial electric boiler rated at 4 kW contains 612 kg of water at 80°C. To adjust boiler level to safe value, 78 kg of water at 26°C was added. Determine the: (i) new temperature of water in the boiler; (ii) ...
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Explain each of the following terms as used in cable size calculations: (i) ambient temperature; (ii) voltage drop. (4 marks)craft1 electrical June/July 2020
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A wooden packaging box of dimension 30 cm by 50 cm by 85 cm has a mass of 70 ke. Determine the: (1) maximum pressure; (ii) minimum pressure it can exert on a horizontal surface. (5 marks)craft1 electrical June/July 2020
State three methods of soldering cable joints.craft1 electrical June/July 2020
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Define the following terms as used in magnetism: (i) reluctance; (ii) hysteresis. (5 marks)craft1 electrical June/July 2020
