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# Electrical Q&A

## Solenoid Problems and Solutions

Herein, we have covered several Solenoid related topics such as Electromagnets, Solenoid & its Characteristics, Solenoid Applications and their Troubleshooting in detail. Electromagnets Define the electromagnet and explain the left-hand rule. An electromagnet is a magnet whose magnetic energy is produced by the flow of electric current. The left-hand rule …

## Electrical Control Devices Questions Answers

Herein, we have covered several questions answers related to Pushbutton, Selector Switch, Joystick, Limit Switch, Foot Switch, Pressure Switch, Temperature Switch, and Level Switch in detail. Industrial Pushbuttons Describe the different parts of pushbuttons and their functions. Pushbuttons are the most common control switches used on industrial equipment. An industrial pushbutton …

## Programmable Logic Controller (PLC) Questions Answers

Herein, we have covered several Programmable Logic Controller (PLC) related topics such as Basic Rules of Line Diagrams, Line Diagrams—Signals, Decisions, and Action, and Logic Functions in detail. Basic Rules of Line Diagrams State the basic rules that determine how and where two or more loads are connected into a control circuit. No …

## Electrical Instrumentation Questions and Answers

Herein, we have covered several Electrical instruments like Digital multimeter, Analog Multimeter, Clamp Meter, Megohmmeter, Oscilloscope, and Phase Sequence Indicator in detail. Safety Understand the stated rules for proper and safe use of hand and power tools. Tools should be kept in good working condition. Periodic inspection of tools helps …

## Electrical Symbols and Diagrams Questions Answers

Language of Control Identify the differences between pictorial drawings, wiring diagrams, schematic diagrams, line diagrams, block diagrams, and flow charts. A pictorial drawing is a drawing that shows the length, height, and depth of an object in one view. Pictorial drawings show physical details of an object as seen by …

Herein, we have covered basic Electrical questions related to Electrical Theory, Electric Circuits, Magnetism, and Power in detail. Electrical Theory State the three fundamental parts of an atom and identify their states of charge. The three fundamental particles contained in atoms are protons, neutrons, and electrons. A proton is a …

## RLC Series Circuit Problems with Solutions

These questions are related to RL Series Circuit, RC Series Circuit, and RLC Series Circuit. These topics are covered in detail here: RL Series Circuit RC Series Circuit RLC Series Circuit Impedance in an AC Circuit 1. Define a series RL circuit: The combination of a resistor and inductor connected …

Transformers Questions and Answers for Interview These questions are related to the following topics: Transformer Working Principle Voltage Regulation of Transformer Efficiency and Losses in Transformer 1. What are the following relationships in an ideal transformer? a. Turns ratio and voltage ratio? The turn’s ratio is the same as the …

## RLC Parallel Circuit Problems with Solutions

Parallel RLC Circuit Example Problems with Solutions These questions are related to Parallel RLC Circuit which is covered in detail here: Parallel RLC Circuit 1. What are the three characteristics of the voltage across each branch of a parallel RL circuit? The voltage across each of the branches is the same …

Electrical Relay Questions These questions are related to Solid State Relay Timers, ON and OFF Delay Timers, Magnetic Motor Contactors and Starters which are covered in detail here: ON Delay Timer and OFF Delay Timer Solid State Timers Motor Contactors and Starters Electromagnetic relays operate in which way? An electromechanical …

Inductor Questions These questions are related to Capacitor Circuit, Capacitor Connections, Capacitive Reactance, and RC Circuit Time Constant which are covered in detail here: Inductors in Series | Inductors in Parallel Inductive Reactance RL Circuit Time Constant   1. Inductance is defined as what? Inductance is the ability of a …

## Basic Electronics Questions and Answers

Electronics Questions and Answers 1. A diode has a certain characteristic when operating. Explain this characteristic. The main operating characteristic of a diode is that it allows current in one direction and blocks current in the opposite direction. 2. What must the conditions be for a LED to emit light? …