Electrical Electronics Engineering MCQ Job Interview MCQ Questions Answers 5

Tuesday, 12 November 2013

Electrical Electronics Engineering  Job Interview MCQ 5



1.       As the temperature of a metallic resistor is increased the product of its resistivity and conductivity remain constant.
2.       The resistance of human body is about 1000 ohms.
3.       The filament of an electric bulb is made of tungsten.
4.       The hot resistance of electric bulb’s filament is higher than its cold resistance because the temperature co-efficient of filament is positive.
5.       A nichrome wire used as a heater coil has a resistance of 2 ohms/m .For a heater of 1 kW at 200 V, the length of the wire required is 20m.
6.       When 1 V is applied in a circuit a current of 1u A flows through it. The conductance of the current is 1 u mho.


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