Electrical and Electronics Engineering Interview Questions and Answers
Question - 41 : - Define Various Modes Of Operation Of Timer?
Answer - 41 : -
The 555 has three main operating modes, Monostable, Astable, and Bistable. Each mode represents a different type of circuit that has a particular output. Astable mode, Bistable Mode (or Schmitt Trigger), Monostable mode.
Question - 42 : - What Is Dsp?
Answer - 42 : -
Digital signal processing (DSP) refers to various techniques for improving the accuracy and reliability of digital communications. The theory behind DSP is quite complex.Basically, DSP works by clarifying, or standardizing, the levels or states of a digital signal.
Question - 43 : - Define Voltage Controller?
Answer - 43 : -
A voltage controller, also called an AC voltage controller or AC regulator is an electronic module based on either thyristors, TRIACs, SCRs or IGBTs, which converts a fixed voltage, fixed frequency alternating current (AC) electrical input supply to obtain variable voltage in output delivered to a resistive load.
Question - 44 : - Define Awgn?
Answer - 44 : -
AWGN Additive White Gaussian Noise. Its the natural noise added in the system.Correlator are used to remove the noise. Equalizer are used to remove the ISI, in the receiver.
Question - 45 : - What is the difference between the term Capacitance and Inductance?
Answer - 45 : -
Difference between Capacitance and Inductance:
- Capacitance: The term capacitance can be specified as an amount of charge stored inside a capacitor at a specifically given voltage.
- Inductance: Inductance is the property of a coil to resist any changes in the electric current flowing through it. Mutual inductance happens when a secondary coil opposes the current change in the primary coil.
Question - 46 : - What would happen when two positively charged materials are placed together?
Answer - 46 : -
As we know that the positives repel and opposites attract. So, if you place two positively charged materials next to each other, the two materials will repel and move away.
Question - 47 : - What are the three different types of cables used in transmissions?
Answer - 47 : -
Following are the three different types of cables used in electric transmission:
- Low Tension Wire: It is used to transmit electricity upto 1000 volts.
- High Tension Wire: It is used to transmit electricity upto 23000 volts.
- Super Tension Wire: It is used to transmit electricity upto 132 kV.
Question - 48 : - What is the difference between a Capacitor, Resistor, and Inductor?
Answer - 48 : -
Capacitor: A capacitor is an electrical component that opposes the current flow and acts as a passive element. It also stores some form of electrical charge when a potential is applied.
Resistor: A resistor is an electrical component that opposes the flow of current. It is a two-terminal component and is mainly used to reduce the flow of current.
Inductor: An inductor is an electrical component used to build electrical circuits and store the energy in the form of a magnetic field. It is also called a choke or a coil.
Question - 49 : - What is the definition of an ideal transformer?
Answer - 49 : -
A transformer is called an ideal transformer if there no losses happen at all. In other words, we can say that, in an ideal transformer, the transformer input authority should be equivalent to the output authority of the transformer, i.e., they have 100% competence.
Transformer Input Power = Transformer Output Power PIN = POUT.
Question - 50 : - How a tube light circuit is connected, and how does it work?
Answer - 50 : -
In a tube light circuit, a choke is linked to one end of the tube light, and a starter is in sequence with the circuit. When we supply the current, the starter breaks off the supply cycle of AC. Due to this unexpected change in supply, the chock makes around 1000 volts. This voltage is enough to break the electrons within the tube to make the electrons flow. Once the accessible voltage passes through the pipe, the appetizer circuit will be out of the part. Now, no supply transform makes the choke voltage normal and diminishes the current.