Electronics and Communication Engineering Quiz

Mathematical Concepts

• A limit is the value approached by a function as its independent variable approaches a fixed value.
• The Laplace Transform of an impulse function is 1.

Antennas and Electromagnetic Waves

• A helical antenna is a type of antenna that is circularly polarized.
• Beamwidth is a measure of the microwave power radiated from an antenna as a function of angular direction from the antenna axis.

Semiconductors

• Doping is the process of adding an impurity to an intrinsic semiconductor.

Electronics and Computer Systems

• ENIAC (Electronic Numerical Integrator and Computer) is the first electronic computer, completed in 1946.
• Electromagnetism is the branch of engineering that deals with the magnetic effects of electric current.
• Uninterruptable Power Supply (UPS) is a system that provides power backup to computers and other devices.
• Erasable Programmable Read-Only Memory (EPROM) is a type of memory that can be erased and reprogrammed.
• Programmable Logic Controller (PLC) is a type of computer used to control and monitor industrial processes.
• Capacitor is a device that consists of two plates separated by a dielectric and can store a charge.
• Flash is a type of Electrically Erasable Programmable Read-Only Memory.

Physics and Signal Processing

• Electromagnetic induction is the process by which an emf and hence current is generated or induced in a conductor when there is a change in the magnetic flux linking the conductor.
• Magnetic field intensity is a vector quantity.
• Fourier Transform is a mathematical process used extensively in digital signal processing (DSP).
• Photons are the fundamental particles of energy (quanta) when referring to light energy.

Oscillators and Circuit Analysis

• Relaxation oscillator is a type of oscillator whose frequency is dependent on the charge and discharge of RC networks.
• The Q factor of a coil can be given as ωL/R, where ω is the angular frequency, L is the inductance, and R is the resistance.
• KCL (Kirchhoff's Current Law) states that the sum of all currents into and out of a node equals zero.

Other Concepts

• Hans Christian Oersted discovered the magnetic effect.
• Rochelle salt is a type of crystal that exhibits the highest piezoelectric activity.
• Resistance has the greatest effect on the figure of merit in a circuit.
• Dynamic range refers to the range of optical power levels over which the receiver operates within the specified values.
• Echo is the reflection of sound.
• Siemens is the Standard International (SI) unit of conductance.