GLOBAL ENGINEERS Electrical Service Engineer Interview Questions and Answers

Q1. Per cubic metre concrete weight
Ans. 
The weight of concrete per cubic metre varies depending on the mix and density.
• The weight of normal concrete is around 2400 kg/m³

• Lightweight concrete can weigh as little as 1600 kg/m³

• Heavyweight concrete can weigh up to 3800 kg/m³

• The weight of concrete can also be affected by the aggregates used
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Q1. Star delta starter
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Q2. Vfd,plc transformer
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Q3. RCA capa break down entry,data entry
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Q1. Only my introduction
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Q1. How much Type of pumps use in industry
Ans. 
There are various types of pumps used in industries, including centrifugal pumps, positive displacement pumps, and diaphragm pumps.
• Centrifugal pumps are commonly used for transferring liquids in industries.

• Positive displacement pumps are used for high viscosity fluids and in applications requiring high pressure.

• Diaphragm pumps are suitable for handling corrosive or abrasive fluids.

• Other types of pumps used in industrie...read more
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Q2. How much Type of pipes
Ans. 
There are various types of pipes used in engineering, including steel, copper, PVC, and HDPE.
• Steel pipes

• Copper pipes

• PVC pipes

• HDPE pipes
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Q3. How to prepare sop
Ans. 
Preparing a standard operating procedure (SOP) involves documenting step-by-step instructions for a specific task or process.
• Identify the task or process that needs an SOP

• Break down the task into smaller steps

• Document each step clearly and concisely

• Include any necessary diagrams, images, or videos for clarity

• Review and revise the SOP regularly to ensure accuracy and effectiveness
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Q4. How many types of bearing
Ans. 
There are several types of bearings used in mechanical engineering.
• Plain bearings

• Rolling element bearings (ball bearings, roller bearings)

• Jewel bearings

• Fluid bearings

• Magnetic bearings
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Q5. Where we use roller bearing
Ans. 
Roller bearings are used in various applications to reduce friction between moving parts.
• Used in automotive industry for wheel hubs, transmissions, and engines

• Commonly used in industrial machinery such as conveyor systems and pumps

• Found in household appliances like ceiling fans and washing machines

• Utilized in aerospace applications for aircraft landing gear and engines
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Q1. What is the difference between Switch gear & Circuit Breakers ?
Ans. 
Switch gear is a combination of electrical disconnect switches, fuses or circuit breakers used to control, protect and isolate electrical equipment. Circuit breakers are specifically designed to protect electrical circuits from damage caused by overload or short circuit.
• Switch gear is a combination of switches, fuses, or circuit breakers used to control electrical equipment.

• Circuit breakers are designed to protect elec...read more
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Q2. Power factor of transformer , Lightning arrestor
Ans. 
Power factor of transformer and lightning arrestor are important factors in electrical engineering.
• Power factor of a transformer is the ratio of real power to apparent power. It indicates how efficiently the transformer is converting electrical power.

• A high power factor indicates efficient power usage, while a low power factor indicates inefficient power usage.

• Lightning arrestors are devices used to protect electrical ...read more
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Q3. Diffrent between ACB & VCB
Ans. 
ACB stands for Air Circuit Breaker and VCB stands for Vacuum Circuit Breaker. Both are types of circuit breakers used in electrical systems.
• ACB uses air as the arc quenching medium, while VCB uses vacuum.

• ACB is suitable for low voltage applications, while VCB is suitable for medium to high voltage applications.

• VCB has higher breaking capacity compared to ACB.

• ACB requires more maintenance compared to VCB due to the pres...read more
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Q4. Soft stater , DOL & Star delta
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Q5. What is VFD
Ans. 
VFD stands for Variable Frequency Drive, a type of motor controller that varies the frequency and voltage supplied to an electric motor.
• VFDs are used to control the speed and torque of AC motors by varying the frequency of the electrical input.

• They are commonly used in industrial applications to save energy, improve process control, and reduce wear and tear on equipment.

• VFDs can be programmed to ramp up or down the mot...read more
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It was good, but a bit tricky

Q1. What is the damped frequency response of a vibrating spring mass system
Ans. 
The damped frequency response of a vibrating spring mass system describes how the system responds to external forces with damping present.
• The damped frequency response is influenced by the damping ratio, natural frequency, and external forces.

• It shows how the amplitude and phase of the system's response change with varying frequencies.

• Examples of damped frequency response include automotive suspension systems and earth
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Q2. Why do you want the job
Ans. 
I am passionate about designing innovative solutions and contributing to the advancement of technology in the field of mechanical engineering.
• I have always been fascinated by the principles of mechanics and enjoy problem-solving.

• I am excited about the opportunity to work on challenging projects that push the boundaries of technology.

• I believe this job will allow me to apply my skills and knowledge to make a meaningful ...read more
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Q1. As per work experiences
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Q1. As per work profile
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Q1. HR Related formal interaction
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Q1. Experience? And basic electrical questions
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Q2. Basic electrical questions
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