PPS International Electrical Engineer Interview Questions and Answers

Q1. A 22 kw AOP motor CT cable burn again and again what is the reason ?
Ans. 
The repeated burning of a 22 kW AOP motor CT cable may be due to overloading, short circuits, poor insulation, or incorrect cable sizing.
• Check for overloading of the motor causing excessive heat in the cable

• Inspect for short circuits in the motor or the wiring

• Ensure proper insulation of the cable to prevent overheating

• Verify if the cable size is appropriate for the motor's power requirements
Answered by AI
View 1 more answer
Q2. When CT of AOP motor is bypassed then what effect on the motor ?
Ans. 
Bypassing the CT of an AOP motor can lead to overcurrent and damage to the motor.
• Bypassing the CT can result in the motor drawing excessive current.

• This can lead to overheating of the motor windings.

• Overcurrent can cause damage to the motor components.

• It can also pose a safety risk due to potential electrical faults.
Answered by AI
View 1 more answer

Q1. What is VFD work
Ans. 
VFD stands for Variable Frequency Drive, which is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the motor.
• VFDs are used to control the speed and torque of AC motors in various applications.

• They are commonly used in HVAC systems, industrial pumps, conveyor systems, and machine tools.

• VFDs can help save energy by adjusting motor speed to match the actual load req...read more
Answered by AI
Add your answer

Q1. All kind of machine related questions
Add your answer
Q2. We have to answer all kind of qustion
Add your answer

Q1. Tell me about yourself.
Add your answer

Q1. About Synchronising Process Motor starter Parameter of different relay setting Vfd
Add your answer

Q1. What is the synchronisation process of plant ?
Ans. 
Synchronisation process of a plant involves matching the frequency, voltage, and phase angle of the incoming generator with the grid.
• Ensure the generator frequency matches the grid frequency (50Hz or 60Hz).

• Match the voltage levels of the generator with the grid.

• Adjust the phase angle of the generator to synchronize with the grid.

• Use synchronizing equipment like synchroscope or synchronizing lamps to ensure proper synch...read more
Answered by AI
Add your answer
Q2. Brief discussion about alternator and transformer protection system ?
Ans. 
Alternator and transformer protection systems are essential for preventing damage and ensuring safe operation.
• Alternator protection systems typically include overcurrent, overvoltage, and reverse power protection to safeguard the alternator from damage.

• Transformer protection systems often involve differential protection, overcurrent protection, and temperature monitoring to prevent overheating and insulation breakdown.

• ...read more
Answered by AI
View 1 more answer

Logical Reasoning, English Quant, Aptitude

Q1. Question on Technical Knowledge
Add your answer
Q2. Ask About Your Experience and Background
Add your answer