J. Kumar Infraprojects Electrician Interview Questions and Answers

Q1. All about of electrical safety and work
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Q2. All work of electrical basic like how to test mager, maltimeter,elcb tester,clamp meter,also earthing tester
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Q1. Electrician and working
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Q2. Maintenance ITI electrician workers
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Q1. Electrician maintenance
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Q2. Superviser electrician
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Q1. What about wiring and boards?
Ans. 
Wiring and boards are essential components of electrical systems.
• Wiring refers to the physical connections between electrical components.

• Boards are used to organize and control the flow of electricity.

• Proper wiring and board design are crucial for safety and efficiency.

• Examples of boards include circuit breaker panels and control boards for industrial machinery.
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Q1. Family background
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Q2. Tell me about yourself
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Q3. What's your salary expectation
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Q1. What is speed difference between stator's rotating magnetic field and rotor's rmf?
Ans. 
The speed difference between stator's rotating magnetic field and rotor's rmf is called slip.
• The slip is necessary for inducing current in the rotor and producing torque.

• The slip is typically around 1-3% in most induction motors.

• Higher slip values can indicate issues with the motor such as overload or mechanical problems.
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Q2. What is induction motor
Ans. 
An induction motor is a type of AC motor where power is supplied to the rotor by electromagnetic induction.
• Induction motors are commonly used in various applications such as industrial machinery, pumps, fans, and compressors.

• They do not require brushes to transfer power to the rotor, making them more reliable and maintenance-free compared to brushed DC motors.

• The speed of an induction motor is determined by the frequen...read more
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Q3. What is synchronisation
Ans. 
Synchronisation is the process of coordinating multiple systems or devices to work together in harmony.
• Synchronisation ensures that different components or processes are aligned in time.

• It is commonly used in electrical systems to ensure that multiple generators are running in phase with each other.

• In data communication, synchronisation is important for ensuring that data is transmitted and received at the correct timi...read more
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Q4. What is the speed of a rotor with respect to the stator magnetic field in an induction motor?
Ans. 
The speed of a rotor with respect to the stator magnetic field in an induction motor is known as slip speed.
• The slip speed is the difference between the synchronous speed of the rotating magnetic field in the stator and the actual speed of the rotor.

• It is necessary for the rotor to operate at a speed slightly slower than the synchronous speed in order to induce current and generate torque.

• The slip speed allows the roto...read more
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Q5. What is slip? Per unit slip?
Ans. 
Slip is the difference between synchronous speed and actual rotor speed in an induction motor. Per unit slip is the slip expressed as a fraction of synchronous speed.
• Slip is the difference between synchronous speed (speed of the rotating magnetic field) and the actual rotor speed in an induction motor.

• Per unit slip is the slip expressed as a fraction of synchronous speed, typically denoted as a percentage.

• For example, ...read more
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To decide how to work in safety in electrical equipment

Q1. Which safety hazard electrical protection
Ans. 
One safety hazard in electrical protection is electric shock.
• Electric shock can occur when coming into contact with live electrical parts.

• Proper grounding and insulation of electrical equipment is essential to prevent electric shock.

• Regular maintenance and inspections of electrical systems can help identify potential hazards.

• Using personal protective equipment such as insulated gloves and safety goggles can reduce the ...read more
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Q1. When you working. How many year experience
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Q2. Expectation salary. Did you what work in previous company.
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Q1. Electrician 3 phase &single phase different
Ans. 
Single phase has one live wire and one neutral wire, while three phase has three live wires and one neutral wire.
• Single phase is used for smaller loads like household appliances.

• Three phase is used for larger loads like industrial machinery.

• Single phase has a lower power output compared to three phase.

• Three phase is more efficient and cost-effective for high power applications.

• Single phase has a voltage of 230V while t...read more
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Q2. Mechanical 2 hp motor how kw need
Ans. 
The kW required for a 2 hp motor depends on the efficiency of the motor.
• The efficiency of the motor needs to be known to calculate the kW required.

• The formula to calculate kW is kW = hp x 0.746 / efficiency.

• Assuming an efficiency of 80%, the kW required for a 2 hp motor would be 1.49 kW.
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Electrician ITI NCVT college

Q1. Abs ka full foom kya h
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Q2. Rile kya hota h or kitna prkar ka hota h
Ans. Jis me no or nc Kam krta h usko rile bolte h
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Q3. Rile link kya hota h
Ans. Jo 1 dusra ko connect krta h usko rile link khte h
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Q4. R c cabal s kon sa istument chlta h
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Q5. Ai or ao ka full fom kya hota h
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Q6. Di or do ka ful fom kya hota h
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