MCQs on History of Electricity

History of Electricity – Definition William Gilbert was the first person discovered electricity. Stephen Gray has discovered the medium (materials) from which electricity can pass or not. Benjamin Franklin has discovered the positive and negative charges. Alessandro Volta had made the first battery. Charles Augustin discovered the laws of attraction and repulsion. All the MCQs…

MCQs on Thermocouple Questions and Answers

Thermocouple – Definition A junction of two dissimilar metal is called thermocouple. Thermocouple is a electrical sensor device used to measure temperature. Junction is a point from which temperature is measures. After the difference of junction temperature e.m.f will be produced. The Galvanometer is a measuring device used to measure e.m.f in thermocouple. It works…

MCQs on Fluorescent Tube Light

Fluorescent Tube Light – Definition Fluorescent Tube Light is also known as Fluorescent lamp or Mercury Vapor Lamp. It was introduced in 1938. It is commonly using at Offices, Schools and industries etc. AC supply is used to operate the fluorescent lamp. The starting time of Fluorescent tube is more than Incandescent lamp. The Fluorescent…

MCQs on Oscilloscope

Oscilloscope – Definition An instrument / device name oscilloscope which displays graphically representation of voltages continuously changing over the time. The waveform displaying on the screen multiple properties like as frequency, amplitude, time interval, rise time, distortion etc. Oscilloscope is the most important tool used for repairing or servicing of electronic circuit. It is easier…

MCQs on Resonance in Series and Parallel Circuit

Resonance in Series and Parallel Circuit – Definition Resonance circuit can be connected in series and parallel combination. The total current in the parallel resonant circuit is zero otherwise, In series resonant circuit is maximum. In the parallel circuit, voltages are increased and current will be increased in series resonant circuit. All the MCQs on Resonance…