Delhi Public School Evaluator Interview Questions and Answers

Q1. Mis u maintenance and bearings and motor Kapil and shots
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Q1. Supervisor residential
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Only basic knowledge question

Q1. Technical interview for regarding your resume
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Q2. What is conductor
Ans. 
A conductor is a material or device that allows the flow of electrical current.
• Conductors have low resistance to the flow of electricity.

• Metals like copper and aluminum are commonly used as conductors.

• Conductors are essential components in electrical circuits.

• Good conductors have high electrical conductivity.
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Q3. Whare are you from
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Q4. What about internship
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Q5. Why are you join this company
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Q1. About m-20 concrite
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Q2. Staircase drawing
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Q3. Column bord making
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Q4. Bbs of slab staircase
Ans. 
Bbs of slab staircase refers to the reinforcement detailing of a slab staircase.
• Bbs stands for bar bending schedule, which provides details about the reinforcement bars used in the construction of the slab staircase.

• The Bbs includes information about the size, shape, and placement of the reinforcement bars.

• It helps in ensuring the structural integrity and strength of the staircase.

• For example, the Bbs may specify the n...read more
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Q5. Surfase leveling finished
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Q1. Name kya hai apka?
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Q2. Degree kya hai
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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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