Electrical principle questions

State three advantages of digital meters over analogue meters. (3 marks)June/July 2020

Explain two types of iron losses occurring in transformers

State three ways in which the capacitance of a capacitor can be varied

A moving coil instrument has a coil resistance of 12Q anda maximum permissible instrument current of 18 mA. The instrument is converted to a voltmeter with a full scale deflection of 250 V. (i) Determine the value of the resistor to ...

State four properties of dielectric

Differentiate between the following with the following with reference with electrical material i. semiconductor; ii. insulator

Define each of the following terms as applied to a.c generation: (i) instantaneous values; (ii) amplitude(4 marks)June/July 2020

State Kirchhoff’s i. voltage law ii. current law  

Define the term reluctance as used in magnetism

A current of 2.45 A flows through a 39 microFarads capacitor connected across a 50 Hz supply. Detérmine the supply voltage. (3 marks)June/July 2020