Pinnacle Infotech Interview Questions, Process, and Tips

Revit software, aptitute & reasoning

Q1. Order of Cable size from 4 sqmm?
Ans. 
The order of cable sizes from 4 sqmm is 6 sqmm, 10 sqmm, 16 sqmm, 25 sqmm, 35 sqmm, 50 sqmm, 70 sqmm, 95 sqmm, 120 sqmm, 150 sqmm, 185 sqmm, 240 sqmm, 300 sqmm, 400 sqmm, 500 sqmm, 630 sqmm, 800 sqmm, 1000 sqmm.
• 6 sqmm

• 10 sqmm

• 16 sqmm

• 25 sqmm

• 35 sqmm

• 50 sqmm

• 70 sqmm

• 95 sqmm

• 120 sqmm

• 150 sqmm

• 185 sqmm

• 240 sqmm

• 300 sqmm

• 400 sqmm

• 500 sqmm

• 630 sqmm

• 800 sqmm

• 1000 sqmm
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Q2. Voltage drop Calculation Parameters?
Ans. 
Voltage drop calculation parameters include conductor material, length, cross-sectional area, current, and temperature.
• Conductor material affects resistance and therefore voltage drop.

• Length of the conductor directly impacts voltage drop.

• Cross-sectional area of the conductor affects resistance and voltage drop.

• Current flowing through the conductor influences voltage drop.

• Temperature can also affect the resistance of th
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Q3. How do you calculate current from Kw,pf,Voltage given?
Ans. 
Current can be calculated using the formula: Current (A) = Power (kW) / (sqrt(3) x Voltage (V) x Power Factor)
• Use the formula: Current (A) = Power (kW) / (sqrt(3) x Voltage (V) x Power Factor)

• Make sure to convert kW to W if necessary (1 kW = 1000 W)

• Ensure the power factor is a decimal value, not a percentage (e.g. 0.85 instead of 85%)
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Q4. Detais about LSIG protection
Ans. 
LSIG protection refers to Long-Time, Short-Time, Instantaneous, and Ground fault protection settings in circuit breakers.
• LSIG protection is commonly used in circuit breakers to provide comprehensive protection against various types of faults.

• Long-Time setting protects against overloads by allowing the circuit breaker to trip after a specified time delay.

• Short-Time setting protects against short circuits by tripping the...read more
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Genral Aptitude Like CHSl

Q1. Most questions for the Electrical Machine
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Q2. Start of induction motor
Ans. 
To start an induction motor, a rotating magnetic field is created by applying a three-phase AC voltage to the stator windings.
• Apply a three-phase AC voltage to the stator windings to create a rotating magnetic field

• The rotating magnetic field induces currents in the rotor windings, causing the rotor to start rotating

• The motor reaches its synchronous speed and continues to run at a slightly lower speed due to slip
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Topic was love marriage vs arrange marriage

Q1. Basic electrical
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Q2. Electrical machine
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Q1. Simple question
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Q2. Moderate question
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Q1. What is BIM ?
Ans. 
BIM stands for Building Information Modeling, a digital representation of physical and functional characteristics of a building.
• BIM is a process that involves creating and managing digital representations of physical and functional characteristics of a building.

• It allows for collaboration and coordination among different stakeholders in the construction process.

• BIM can be used for design, construction, and operation of...read more
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Its a online testing process. Firstly you need thorough knowledge of your subject and need to best practice of aptitude. The timing of exam was around 2.5 hours. If you have practice you can easily crack it.

They will give a topic and give 5 minutes time to think about. You have to say to the point of the topic

Q1. Its around 1.5 hours interview. The interviewer ask me each and every details from my subjects specially from my fevorite subjects
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Q2. Losses of transformer and it's expression
Ans. 
Losses in a transformer are categorized as copper losses and iron losses, which are expressed as P = I^2R and P = V^2/R respectively.
• Copper losses occur due to resistance in the windings and are proportional to the square of the current flowing through them.

• Iron losses, also known as core losses, are caused by hysteresis and eddy currents in the transformer core and are proportional to the square of the voltage applied...read more
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Q1. Its most easy round, just you have to apply your common sense
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