Halma plc Interview Questions and Answers

Q1. Heating and cooling load calculation
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Q2. Mass flow rate calculation
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Q3. Refrigeration and AHU system design
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Q4. Previous experience
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Q5. Manager Discussion
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Q6. HR discussion
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Q1. What is the difference between a diesel engine and a petrol engine?
Ans. 
Diesel engines use compression ignition while petrol engines use spark ignition.
• Diesel engines use compression ignition, where the fuel-air mixture is compressed until it spontaneously ignites.

• Petrol engines use spark ignition, where a spark plug ignites the fuel-air mixture.

• Diesel engines are more fuel efficient and have higher torque, while petrol engines have higher power output and smoother operation.

• Diesel engines...read more
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Q2. What is a four-stroke engine?
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A four-stroke engine is an internal combustion engine that completes four separate strokes (intake, compression, power, exhaust) in two crankshaft revolutions.
• Intake stroke: Fuel and air are drawn into the combustion chamber.

• Compression stroke: The fuel-air mixture is compressed by the piston.

• Power stroke: The spark plug ignites the mixture, causing an explosion that drives the piston down.

• Exhaust stroke: The piston pu...read more
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Q3. How many types of break
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There are two main types of breaks: planned breaks and unplanned breaks.
• Planned breaks are scheduled breaks that are typically taken during designated times, such as lunch or coffee breaks.

• Unplanned breaks are unexpected interruptions in work, such as equipment malfunctions or emergencies.

• Examples: lunch break, coffee break, equipment malfunction causing downtime
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Q4. What is ABS system
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ABS system stands for Anti-lock Braking System, a safety feature in vehicles to prevent wheels from locking up during braking.
• ABS system helps maintain steering control during emergency braking

• It prevents skidding and allows the driver to maintain control of the vehicle

• ABS system works by modulating brake pressure to individual wheels

• Commonly found in modern vehicles for enhanced safety

• Example: When braking hard on a s...read more
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Q5. What is carborator
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A carburetor is a device in an internal combustion engine that mixes air with a fine spray of liquid fuel.
• Carburetors are used in older vehicles to control the air-fuel mixture for combustion

• They have been largely replaced by fuel injection systems in modern vehicles

• Carburetors have components such as throttle, choke, and jets to regulate fuel flow

• Examples of vehicles with carburetors include classic cars and motorcycl
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Q1. How to use wire tiper and grimper
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Wire tiper and crimper are tools used to strip and crimp wires for electrical connections.
• Use wire stripper to remove insulation from the end of a wire by placing it in the cutting jaws and squeezing the handles.

• Use wire crimper to attach a connector to the stripped end of the wire by placing the connector in the crimping jaws and squeezing the handles.

• Ensure the wire is stripped to the correct length before crimping t...read more
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Q2. How to identify simples and understand drawing which simple which metrial
Ans. 
Identifying simples and understanding drawings is crucial for Panel Wireman.
• Study the drawing carefully to identify different components and materials used

• Refer to the legend or key provided in the drawing for symbols and materials

• Consult with supervisors or experienced colleagues for clarification if needed

• Use measuring tools to verify dimensions and materials specified in the drawing

• Attend training sessions or worksh...read more
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Q1. Family how many persons
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I have a family of 4 persons including myself.
• My family consists of 4 members

• This includes myself and 3 other family members

• We are a family of 4
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Q2. Before which company you done out work
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I have worked for ABC Company and XYZ Company in the past.
• Worked for ABC Company as a Panel Wireman

• Also worked for XYZ Company on various projects
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Q1. Aoi operator in tri
Ans. 
Operator ing in aoi pcb
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Q2. Pri aoi and post aoi is a operator
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Operator ing in aoi pcb
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Q1. Aoi operator pri and p Post
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Operator ing in aoi pcb
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Q2. Pri aoi and post aoi operator
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Q1. Aoi operator pri and post aoi
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Q2. Aoi operator pri and post aoi operator
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Q1. Pri aoi and post aoi operator
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Q2. Pri aoi and post aoi operator
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Q1. Pri aoi and post aoi operator
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Q2. Pri aoi and post aoi operator
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Q1. Aoi operator pri and post aoi operator is handling
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Q2. Aoi operator pri and post aoi operator handling
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Aoi operator pri and post aoi operator

Aoi operator pri and post aoi operator

Aoi operator pri and post aoi operator

Aoi operator pri and post aoi operator

Aoi operator and post aoi operator pri

Aoi operator pri and post

Q1. About your last working experince.
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Q2. Explain your strength and Weakness
Ans. 
Strength: Excellent communication skills, Weakness: Difficulty saying no
• Strength: Able to effectively communicate with customers to address their needs

• Strength: Skilled at diffusing tense situations and providing solutions

• Weakness: Struggle with setting boundaries and saying no to additional tasks

• Weakness: Working on assertiveness and time management to improve in this area
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Q1. How three level inverter topology work?
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Q2. Explain data centre electrical configuration with UPS.
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Q1. Top frequent element
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Q2. SQL query to remove duplicates
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