TMEIC Electrical Design Engineer Interview Questions and Answers

Q1. Questions from previous employment.
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Q2. Asked about knowledge in material selection according to design
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Q1. Asked to draw a any feeder drawing in software using Eplan tool.
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Q2. Asked about eplan tools
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Q1. General questions about my self,salary discussion.
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Q1. What is circuit breakers
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Q2. What is difference contractor or relay
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Q3. What is difference neutral or earthing
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Q4. What is star or delta
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Q5. What is use contractor
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Q1. Draw the star delta controlling
Ans. 
Star delta controlling is a method used to reduce the starting current of induction motors.
• Star delta controlling involves initially connecting the motor windings in a star configuration for starting, then switching to a delta configuration for running.

• It is commonly used for large induction motors to reduce the starting current and torque.

• The transition from star to delta configuration is typically controlled by a mot...read more
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Q2. How many contactor use in star delta??
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In star delta connection, typically two contactors are used.
• In star delta connection, one contactor is used for star connection and another contactor is used for delta connection.

• The star contactor is typically rated for the current of one winding, while the delta contactor is rated for the full motor current.

• Using two contactors helps in reducing the starting current and torque in the motor.

• For example, a 3-phase moto...read more
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Q3. Draw the single line diagram for DOL.
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Single line diagram for DOL is a simple representation of Direct-On-Line motor starter circuit.
• DOL starter consists of a contactor, overload relay, and start/stop push buttons.

• The single line diagram shows the connections between these components.

• The power supply is connected to the contactor, which is then connected to the motor.

• The overload relay is connected in series with the motor to protect it from overloading.

• St...read more
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Q1. Introduction your self
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I am an experienced Electrical Engineer with expertise in designing and implementing electrical systems.
• I have a Bachelor's degree in Electrical Engineering from XYZ University.

• I have worked for 5 years at ABC Company, where I designed and implemented electrical systems for commercial buildings.

• I am proficient in using CAD software for creating electrical schematics and layouts.

• I have experience in troubleshooting and ...read more
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Q2. Technical answer
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Q3. What is oms law What resistance unit
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Ohm's Law is a fundamental principle in electrical engineering that relates the current flowing through a conductor to the voltage across it and the resistance of the conductor.
• Ohm's Law states that the current (I) flowing through a conductor is directly proportional to the voltage (V) across it and inversely proportional to the resistance (R) of the conductor.

• The formula for Ohm's Law is: V = I * R, where V is the vol...read more
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Q4. What's current unit
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The current unit is the ampere (A), which measures the flow of electric charge.
• The ampere is named after the French physicist André-Marie Ampère.

• Current is the rate at which electric charge flows through a conductor.

• Other common units for current include milliamperes (mA) and microamperes (μA).
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Q5. Write the voltage unit
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The voltage unit is measured in volts (V).
• The voltage unit is denoted by the symbol V.

• Voltage is the potential difference between two points in an electrical circuit.

• Common examples of voltage units include millivolts (mV), kilovolts (kV), and megavolts (MV).
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Q1. How many years experience in electrical technician in India
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Q2. Dubai UAE all futain
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Q3. Johnson controls Chennai oragadam
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Q4. Melcon private limited Chennai
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How to make new project in R&D

Q1. All smart City Device configuration
Ans. 
Smart City Device configuration involves setting up various sensors, communication protocols, and data management systems to enable efficient city operations.
• Configure sensors for monitoring traffic flow, air quality, noise levels, etc.

• Implement communication protocols such as LoRaWAN, NB-IoT, or WiFi for data transmission.

• Set up data management systems like cloud platforms or edge computing for processing and analyzin
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Q1. What is current?
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Current is the flow of electric charge through a conductor.
• Current is measured in Amperes (A).

• It is the rate of flow of electric charge.

• Current flows from high potential to low potential.

• There are two types of current - AC (Alternating Current) and DC (Direct Current).

• Examples of current sources include batteries, generators, and power plants.
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Q2. Define Resistance?
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Resistance is the opposition to the flow of electric current in a circuit.
• Resistance is measured in ohms (Ω).

• It is caused by the collisions of electrons with atoms in a conductor.

• Higher resistance leads to lower current flow in a circuit.

• Resistance can be calculated using Ohm's Law: R = V/I, where R is resistance, V is voltage, and I is current.

• Examples of resistors include light bulbs, heating elements, and electronic
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Q3. What is Ohm law
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Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to the resistance of the conductor.
• Ohm's Law is represented by the formula V = I * R, where V is voltage, I is current, and R is resistance.

• It helps in calculating the relationship between voltage, current, and resistance in an electrical circuit.

• It was formulated by German...read more
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Q4. What is the voltage?
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Voltage is the difference in electric potential between two points, measured in volts.
• Voltage is the potential difference between two points in an electrical circuit

• It is measured in volts (V)

• Voltage is responsible for the flow of current in a circuit

• Higher voltage means more potential energy available to move electrons

• Examples: 120V in household outlets, 12V in car batteries
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Q5. Whats is the drift Velocity?
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Drift velocity is the average velocity of charge carriers in a particular direction under the influence of an electric field.
• Drift velocity is a result of the electric field applied to a conductor.

• It is typically very small, on the order of millimeters per second.

• Drift velocity is influenced by the material of the conductor and the strength of the electric field.

• It is an important concept in understanding current flow
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