Electrical principle questions

A series circuit consisting of a Capacitor and a resistor is connected across a d.c supply. Draw and label the following circuit transient curves: (i) capacitor voltage transient; – (i) resistor voltage transient; (iti) current transient. (6 marks)June/July 2020

State two applications of time constant in RC circuits. (2 marks)June/July 2020

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

Name three types of capacitor

State faraday’s two laws of electrolysis

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

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

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 ...

Explain the principle of Wheatstone bridge and derive the formula for balance condition

Describe the following types of DC motors: i. shunt motor ii. series motor