Electrical and Electronics Engineering Interview Questions and Answers
Question - 51 : - What are the functions of the different colored wires in the electric circuit?
Answer - 51 : -
In the electric circuit, the different types of colored wires specify the different functions they do. Primarily, there are seven types of colored wires in the electric circuit that have their task.
Black: The black wire is the primary source of power supply in the electric circuit. This is not used for ground wires. It is either used in the hot state or live state.
Green: The green wire is used to connect to the ground terminal. An outlet box contains green wires.
Red: The red wire is the second primary wire. It is used to transmit the live state of the wire. It can be used in different types of interconnections and are present in a circuit of 220 volts. Moreover, it can either be connected to another red wire or a black wire.
White/Gray: The white or gray wire is the neutral wire. It is used to carry out the unbalanced load to the terminal. The terminal of this wire is located in the ground. This wire can connect itself to its types of wires.
Blue/Yellow: The blue or yellow wires carry power, so they are used as live wires. Generally, most devices do not have these wires.
Question - 52 : - What are the transistors made of?
Answer - 52 : -
The transistors are made of several combinations of n-type and p-type semiconductors.
Question - 53 : - What is Armature Reaction?
Answer - 53 : -
The armature reaction is the effect of the armature field on the main field. In other words, we can say that the armature reaction specifies the impact of the armature flux on the main field flux. The armature field is produced by the armature conductors when we flow the current through them.
Question - 54 : - What do you understand by the RLC current?
Answer - 54 : -
RLC stands for Resistor (R), Inductor (which is denoted by L), and Current (C). The word RLC is made of three elements of the circuit which are Resistor (R), Inductor (L), and Current (C). This circuit can provide direct current flowing throughout the circuit. This ability is characterized by a differential equation of the second order. That's why it is also known as a second-order circuit.
Question - 55 : - What would happen if the series current gets double?
Answer - 55 : -
If the series current gets double, then the confrontation will half.
Question - 56 : - What are the different types of semiconductors?
Answer - 56 : -
There are mainly two types of semiconductors used in electronics, i.e., intrinsic and extrinsic semiconductors. The extrinsic semiconductors can be categorized into N-type semiconductors and P-type semiconductors.
Question - 57 : - What do you understand by a Zener diode?
Answer - 57 : -
A Zener diode is a specific type of semiconductor diode used to permit existing current to flow in the conflicting direction when uncovered to sufficient voltage.
Question - 58 : - What is the primary usage of a transistor in an electric circuit?
Answer - 58 : -
Transistors are mainly used to amplify the current to make the output power higher than the input power.
Question - 59 : - What is the usage of a string of resistors in a series?
Answer - 59 : -
When we add a string of resistors in a sequence, they split the source voltage into the amount to their values.
Question - 60 : - What do you understand by a laser diode?
Answer - 60 : -
A laser diode is a compact transistor with two or even more than two electrical leads. It is a semiconductor device similar to a light-emitting diode in which a diode-pumped directly with an electrical current can create lasing conditions at the diode's junction. Laser diodes can directly convert electrical energy into light.