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Fia Technology Services Interview Questions and Answers

Updated 5 Feb 2024

Q1. Do you know about cable size estimation as per required load

Ans.

Yes, cable size estimation is based on the required load and can be calculated using various formulas.

  • Cable size estimation is important to ensure safety and efficiency of electrical systems

  • The required load can be calculated by adding up the wattage of all the devices that will be connected to the cable

  • The cable size can then be estimated using formulas such as the voltage drop formula or the NEC ampacity tables

  • Factors such as distance, temperature, and number of conductors ...read more

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Q2. How many control voltage applications do you came to use

Ans.

I have worked with various control voltage applications in my previous roles.

  • I have experience with control voltage applications in industrial machinery and equipment.

  • I am familiar with troubleshooting and repairing control voltage circuits.

  • I have worked with PLCs and other control systems that use control voltage.

  • Examples of control voltage applications I have worked with include motor starters, relays, and solenoids.

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Q3. Define the terms kWh, kVAh, kVAR, kVARh and differtiate them

Ans.

kWh, kVAh, kVAR, kVARh are units of energy and power. They differ in terms of their measurement and usage.

  • kWh is a unit of energy and is used to measure the amount of energy consumed over time

  • kVAh is a unit of apparent power and is used to measure the total amount of energy supplied to a system

  • kVAR is a unit of reactive power and is used to measure the power that is not used to perform work

  • kVARh is a unit of reactive energy and is used to measure the amount of reactive energy...read more

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Q4. Difference between AC and DC voltage

Ans.

AC voltage changes direction periodically while DC voltage flows in one direction only.

  • AC voltage is used for power transmission over long distances while DC voltage is used for electronic devices.

  • AC voltage can be easily stepped up or down using transformers while DC voltage cannot.

  • AC voltage is measured in RMS (Root Mean Square) while DC voltage is measured in average value.

  • Examples of AC voltage sources include power grids and generators while examples of DC voltage source...read more

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Q5. What are the transformer types

Ans.

Transformer types include step-up, step-down, isolation, autotransformer, and instrument transformer.

  • Step-up transformer increases voltage while decreasing current

  • Step-down transformer decreases voltage while increasing current

  • Isolation transformer separates primary and secondary windings

  • Autotransformer has a single winding with multiple taps for voltage adjustment

  • Instrument transformer is used for measuring current or voltage in high-power circuits

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Q6. Kw to hp conversions

Ans.

Kw to hp conversions

  • 1 kW = 1.34 hp

  • To convert kW to hp, multiply by 1.34

  • To convert hp to kW, divide by 1.34

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