Electrical Engineering Quiz

Which of the following circuit elements will oppose the change in circuit current?

• Capacitance

• Inductance

• Resistance

• All of the given options

In a drive system requiring high starting torque, which electric motor is more suitable?

• Synchronous motor

• DC cumulative compound motor

• DC Series motor

• Double cage induction motor

Generally, mobility of electrons in a semiconductor is _________ times the mobility of holes:

• Two

• Three

• Four

• Five

In a p-n junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:

• Must sum to zero separately

• Must sum to unity separately

• Must sum to zero

• Must sum to unity

Fermi level is the measure of:

• Doping of electrons

• Probability of occupancy of electrons or holes

• Probability of occupancy of photons

• Probability of occupancy of wavelength

Semiconductor lasers are based on the following principle:

• Population inversion at a junction

• PN junction is formed between degenerate materials

• Stimulated emission of radiation

• Spontaneous emission of radiation

Which component is used to store electrical energy in an electric field?

• Resistor

• Inductor

• Capacitor

• Transformer

Which of the following is a passive component?

• Transistor

• Diode

• Resistor

• Operational amplifier

The unit of electrical resistance is:

• Volt

• Ampere

• Ohm

• Farad

Which device converts electrical energy into mechanical energy?

• Generator

• Transformer

• Motor

• Rectifier