Bridge & Roof Co Electrical Engineer Interview Questions and Answers

Q1. What do you know about PCB ?
Ans. 
PCB stands for Printed Circuit Board, a board made of non-conductive material with conductive tracks for electronic components.
• PCB is used to mechanically support and electrically connect electronic components using conductive pathways.

• It is made of non-conductive material like fiberglass, with copper tracks to connect components.

• PCBs can be single-sided, double-sided, or multi-layered depending on the complexity of th...read more
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Q2. What is the active and passive components?
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Active components require a power source to operate, while passive components do not.
• Active components require an external power source to function, such as transistors and integrated circuits.

• Passive components do not require an external power source, such as resistors and capacitors.

• Active components can control the flow of electricity, while passive components simply store or dissipate energy.

• Examples of active comp...read more
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Q3. What is the difference between resistance and capacitor?
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Resistance is the opposition to the flow of current in a circuit, while a capacitor stores and releases electrical energy.
• Resistance limits the flow of current, while a capacitor stores and releases charge.

• Resistance is measured in ohms, while capacitance is measured in farads.

• Examples of resistors include carbon film resistors, while examples of capacitors include ceramic capacitors.

• Resistance dissipates energy in the...read more
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Q4. What do you know about SMT ?
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SMT stands for Surface Mount Technology, a method of electronic component assembly where components are mounted directly onto the surface of a printed circuit board (PCB).
• SMT components are smaller and lighter than through-hole components, allowing for higher component density on PCBs.

• SMT components are typically mounted using solder paste and reflow soldering techniques.

• SMT technology allows for automated assembly pro...read more
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Q1. What is moter and it capacity
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A motor is a device that converts electrical energy into mechanical energy to perform work.
• Motors are commonly used in various applications such as electric vehicles, industrial machinery, and household appliances.

• They come in different types such as AC motors, DC motors, and stepper motors.

• Motor capacity refers to its power rating, typically measured in horsepower (HP) or kilowatts (kW).

• Higher capacity motors can gene...read more
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Q2. Moter is a mechanical part which convert electrical energy in to mechanical energy
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Q1. Why do you want to do job?
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Q2. Why have you joined Electronics?
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Q3. What is Ohm's law?
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Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
• Ohm's law is represented by the equation I = V/R, where I is the current, V is the voltage, and R is the resistance.

• It is named after Georg Simon Ohm, a German physicist who first formulated this law.

• This law is applicable to all types of circuits, including DC and AC circuits.

• It is use...read more
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Q1. About youself? Role and responsibilities? why are you interested?
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I am an experienced Electrical Engineer with a passion for designing and implementing innovative solutions.
• I have a strong background in electrical engineering, with a focus on power systems and control systems.

• I have successfully designed and implemented electrical systems for various projects, including commercial buildings and industrial plants.

• I am skilled in using CAD software for electrical design and have experi...read more
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Q1. About yourself? Role and responsibilities? day to day site work? what do u know about bechtel? Electrical safety? Drawing details?shop drawing? LOTO system? NC for quality and safety? Earthing system? powe...read more
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Q1. Documents? Current base salary? Expected base salary? Tentative date of joining?
Ans. 
I can provide the required documents and discuss salary and joining details.
• I can provide all necessary documents such as resume, certifications, and transcripts.

• My current base salary is $X per year.

• I expect a base salary in the range of $Y to $Z per year.

• I am available to join within X weeks/months.

• I can discuss further details during the interview.
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Q1. What is CT and PT
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CT stands for Current Transformer and PT stands for Potential Transformer. They are used in electrical systems for measurement and protection purposes.
• CT is used to measure current in high voltage circuits by stepping down the current to a safe level for measurement.

• PT is used to measure voltage in high voltage circuits by stepping down the voltage to a safe level for measurement.

• Both CT and PT are essential components...read more
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Q2. What is DTC structure
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DTC structure stands for Direct Torque Control structure, a control method used in AC motor drives for precise torque and speed control.
• DTC structure is a control technique used in AC motor drives to directly control torque and flux without the need for a separate speed controller.

• It is based on the principle of controlling the torque and flux by selecting the appropriate voltage vectors in the motor.

• DTC structure offe...read more
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Q3. Use of LA, AB switch
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LA, AB switch is used in electrical engineering to switch between two different signal sources or destinations.
• LA, AB switch is commonly used in audio and video equipment to switch between different inputs or outputs.

• It allows for easy switching between two different signal sources or destinations without having to physically disconnect and reconnect cables.

• The switch typically has two positions - one for each signal s...read more
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30 questions in 30 minutes question from machine and power system

Q1. Questions from transformer and 3 phase synchronous machine and from internship
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