50+ Junior Technician Interview Questions and Answers

Hydraulic valves control the flow and pressure of hydraulic fluid in a system. They can be operated manually or automatically.

• Hydraulic valves are used to control the flow and pressure of hydraulic fluid in a system.

• They are essential components in hydraulic systems, allowing for precise control and regulation.

• Hydraulic valves can be operated manually using levers, knobs, or buttons.

• They can also be operated automatically through the use of solenoids or other control mechanis...read more

Resistance can be calculated using Ohm's Law, which states that resistance is equal to voltage divided by current.

• Use Ohm's Law: R = V / I

• Resistance is measured in ohms (Ω)

• Voltage is measured in volts (V)

• Current is measured in amperes (A)

• Example: If the voltage is 12V and the current is 2A, the resistance would be 6Ω

BQS machine operating and ACG camera settings are important for efficient and accurate testing.

• BQS machine is used for testing the quality of tablets and capsules.

• ACG camera settings are used to capture images of the tablets and capsules for analysis.

• Proper calibration and maintenance of the BQS machine is crucial for accurate results.

• ACG camera settings should be adjusted based on the size and shape of the tablets or capsules being tested.

Transformer works on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.

• Transformers have two coils of wire, known as primary and secondary coils.

• When an alternating current flows through the primary coil, it creates a changing magnetic field.

• This changing magnetic field induces a voltage in the secondary coil, transferring electrical energy.

• The ratio of the number of turns in the primary and secondary coils determines the vo...read more

Operation of Vial Filling Machine and Aseptic Area

• Ensure the machine is clean and sterilized before use

• Follow proper gowning procedures before entering the aseptic area

• Maintain a sterile environment by using sterile gloves and disinfectants

• Monitor the filling process to ensure accurate volume and proper sealing

• Perform routine maintenance and cleaning of the machine

• Document all activities and deviations in the batch record

Embedded systems are useful for controlling and monitoring various devices and systems.

• Embedded systems are used in a wide range of applications such as consumer electronics, automotive systems, industrial automation, and medical devices.

• They provide real-time control and monitoring capabilities, allowing devices to respond quickly and accurately to external events.

• Embedded systems are often used in safety-critical applications where reliability and stability are crucial.

• They...read more

An RTD is a type of temperature sensor that operates on the principle that the electrical resistance of a metal increases with temperature.

• RTDs are commonly made of platinum, nickel, or copper.

• They provide accurate and stable temperature measurements.

• RTDs are used in various industries such as automotive, aerospace, and HVAC systems.

• They have a linear relationship between resistance and temperature, making them easy to calibrate and use.

The relationship between current, voltage, and resistance is described by Ohm's Law.

• Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to the resistance of the conductor.

• Mathematically, Ohm's Law is expressed as I = V/R, where I is the current in Amperes, V is the voltage in Volts, and R is the resistance in Ohms.

• This relationship helps in understanding how changes in voltage or re...read more

Embedded system is a computer system designed to perform specific tasks, with dedicated functions and limited resources.

• Embedded systems are found in various devices such as smartphones, cars, medical equipment, and home appliances.

• They are designed to be reliable, efficient, and often operate in real-time.

• Embedded systems typically consist of a microcontroller or microprocessor, memory, input/output interfaces, and software.

• They can be programmed in various languages like C,...read more

Tools commonly used in the field of Junior Technician include screwdrivers, pliers, multimeters, soldering irons, and wire strippers.

• Screwdrivers

• Pliers

• Multimeters

• Soldering irons

• Wire strippers

I aim to contribute to Rentokil PCI's mission of providing effective pest control solutions while growing my technical skills.

• I admire Rentokil PCI's commitment to sustainability and innovation in pest management.

• I want to be part of a team that prioritizes customer satisfaction and safety.

• I am eager to learn from experienced professionals in the field.

• I believe my technical skills can help improve service efficiency and effectiveness.

I completed my 12th grade with a focus on science, which laid the foundation for my technical skills and knowledge.

• Studied subjects like Physics, Chemistry, and Mathematics, which enhanced my analytical skills.

• Participated in science fairs, showcasing projects that demonstrated practical applications of theoretical concepts.

• Engaged in group studies, which improved my teamwork and communication skills.

• Achieved a commendable percentage, reflecting my dedication and hard work.

Aircraft fuelling involves a series of procedures and precautions to ensure safety and efficiency.

• Before fuelling, the aircraft must be properly grounded to prevent static electricity buildup.

• The fuel truck must be positioned correctly and securely connected to the aircraft's fuel system.

• The fuel type and quantity must be verified before starting the fuelling process.

• During fuelling, the fuel flow rate must be monitored to prevent overfilling or spillage.

• After fuelling, the f...read more

A magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

• A magnetic field is produced by moving electric charges or magnetic materials.

• It exerts a force on other moving charges and magnetic materials within its vicinity.

• The strength and direction of a magnetic field can be represented by magnetic field lines.

• Examples include the Earth's magnetic field and the magnetic field around a bar magnet.

Current is the flow of electric charge in a circuit.

• Current is the rate of flow of electric charge in a circuit.

• It is measured in Amperes (A).

• Current flows from positive to negative terminal in a circuit.

• There are two types of current - AC (Alternating Current) and DC (Direct Current).

The unit of resistance is ohm (Ω).

• The unit of resistance is measured in ohms (Ω).

• Resistance is denoted by the symbol 'R' in equations.

• One ohm is equal to one volt per ampere (1 Ω = 1 V/A).

Colour coding is a system of assigning colours to objects or information to convey meaning or identification.

• Used in various fields such as electronics, wiring, and safety equipment

• Example: Red wire indicates positive polarity in electronics

• Example: Red colour on safety equipment indicates fire hazard

• Helps in quick identification and reduces errors

There are various types of insulation materials used in construction and industrial applications.

• Fiberglass

• Foam board

• Mineral wool

• Cellulose

• Polyurethane

• Polystyrene

Color coding is used to identify the resistance value of a resistor.

• The first band represents the first digit of the resistance value.

• The second band represents the second digit of the resistance value.

• The third band represents the multiplier.

• The fourth band represents the tolerance.

• For example, a resistor with brown, black, red, and gold bands has a resistance value of 1.0 ohm with a tolerance of +/- 5%.

I have experience in performing routine maintenance on air conditioning systems.

• Performed regular inspections to check for leaks and proper functioning of components

• Cleaned and replaced air filters as needed

• Checked refrigerant levels and made adjustments as necessary

• Calibrated thermostats for optimal performance

• Provided recommendations for system upgrades or repairs based on findings

The unit of current is Ampere (A).

• The unit of current is Ampere (A)

• It is named after the French physicist Andre-Marie Ampere

• Current is the flow of electric charge in a circuit

Transformers are devices that transfer electrical energy between two or more circuits through electromagnetic induction. AC and DC differ in terms of direction of current flow and voltage type.

• Transformers are used to increase or decrease voltage levels in electrical circuits.

• AC (alternating current) changes direction periodically, while DC (direct current) flows in one direction.

• AC is commonly used in household appliances and power distribution systems, while DC is used in b...read more

Transformer rating depends on the type of transformer, such as power rating, voltage rating, and current rating.

• Transformer rating includes power rating, voltage rating, and current rating

• Power rating is the maximum power that the transformer can handle

• Voltage rating is the maximum voltage that the transformer can handle

• Current rating is the maximum current that the transformer can handle

Elevators typically use dry-type transformers due to their safety and reliability.

• Dry-type transformers are preferred in elevators for safety reasons

• They do not use oil, reducing the risk of fire

• Examples of dry-type transformers used in elevators include cast resin transformers

MDPE code refers to Medium Density Polyethylene code. PE100 has higher density and strength compared to PE80.

• MDPE code stands for Medium Density Polyethylene code used to classify the material.

• PE100 has a higher density and strength compared to PE80, making it more suitable for high pressure applications.

• PE80 is commonly used for low pressure applications such as water supply pipes.

• PE100 is more resistant to stress cracking and has a longer lifespan compared to PE80.

PPEs are essential for ensuring safety and health in industrial workplaces, protecting workers from various hazards.

• Protective clothing (e.g., coveralls) shields against chemical spills.

• Safety goggles prevent eye injuries from flying debris.

• Hearing protection (e.g., earplugs) is crucial in noisy environments.

• Respirators safeguard against inhaling harmful dust or fumes.

• Gloves protect hands from cuts, chemicals, and heat.

Open loop systems do not have feedback mechanisms, while closed loop systems do.

• Open loop systems do not use feedback to control the output

• Closed loop systems use feedback to adjust the output based on the input

• Open loop systems are simpler but less accurate

• Closed loop systems are more complex but more accurate

• Example: A toaster is an open loop system - it does not adjust the toasting time based on the bread's actual level of doneness

• Example: A thermostat is a closed loop sys...read more