Purbanchal Cement Interview Questions, Process, and Tips

Starters are devices used to start and control the speed of induction motors.

• Direct On-Line (DOL) starter: provides full voltage to the motor at start

• Star-Delta starter: reduces the starting current by initially connecting the motor in star configuration

• Auto-transformer starter: uses an auto-transformer to reduce the voltage during starting

• Soft starter: gradually increases the voltage to the motor to reduce starting cu...read more

Earthing is the process of connecting electrical systems to the ground to prevent electric shock and protect equipment.

• Types of earthing include plate earthing, pipe earthing, rod earthing, and strip earthing.

• Methods of earthing include neutral earthing, equipment earthing, and system earthing.

• Earthing is essential for safety in electrical systems to prevent electric shock and damage to equipment.

• Proper earthing ensure...read more

TF stands for Transformer. It is a static device used to transfer electrical energy between two or more circuits through electromagnetic induction.

• Principle of TF involves Faraday's law of electromagnetic induction.

• Types of TF include step-up, step-down, isolation, auto-transformer, etc.

• TFs are used in power distribution, voltage regulation, impedance matching, etc.

The starting current of a DOL starter is typically 6-8 times the rated current of the motor.

• The Direct-On-Line (DOL) starter is used to start induction motors.

• The starting current of a DOL starter is usually 6-8 times the rated current of the motor.

• This high starting current can cause voltage drops and stress on the electrical system.

Choose AC cables based on current rating, insulation material, and environmental conditions.

• Consider the current rating of the cable to ensure it can handle the load

• Choose the appropriate insulation material based on the application and environment

• Take into account environmental conditions such as temperature, moisture, and exposure to chemicals

• Select the right cable size to minimize voltage drop and power loss

• Ensure c...read more

The output voltage of an AAAC Rabbit conductor is typically around 600 volts.

• The output voltage of an AAAC Rabbit conductor is usually around 600 volts.

• The exact output voltage may vary depending on the specific application and conditions.

• It is important to consult the manufacturer's specifications for accurate information.

My execution work plan involves setting clear goals, creating a timeline, assigning tasks, monitoring progress, and adjusting as needed.

• Set clear goals and objectives for the project

• Create a detailed timeline with milestones and deadlines

• Assign tasks to team members based on their strengths and expertise

• Regularly monitor progress and make adjustments as needed

• Communicate effectively with team members and stakeholders

• Ut...read more

There are mainly four grades of bitumen commonly used in construction: VG-10, VG-20, VG-30, and VG-40.

• VG-10: Suitable for low-traffic roads

• VG-20: Suitable for medium-traffic roads

• VG-30: Suitable for high-traffic roads

• VG-40: Suitable for heavy-duty traffic areas like airports and container terminals

The compressive strength of cement mortar cube at 3 days is typically around 20-25 MPa.

• Compressive strength of cement mortar cube is an important parameter to assess its quality and durability

• The strength of cement mortar increases with age, so 3 days is an early testing point

• Typical compressive strength values for cement mortar cubes at 3 days range from 20-25 MPa