Diagnosis Engineer

Diagnosis Engineer Interview Questions and Answers

Updated 21 May 2024

Q1. What is BMS, what are the basic components of a BMS.

Ans.

BMS stands for Battery Management System. It is a system that manages and monitors the performance of a battery.

Basic components of a BMS include battery monitoring unit, battery control unit, and battery charger.
Battery monitoring unit measures voltage, current, temperature, and state of charge of the battery.
Battery control unit manages the charging and discharging of the battery to optimize performance.
Battery charger is responsible for charging the battery efficiently and...read more

Q2. What is MCU & Motor, basic structure of MCU & Motor

Ans.

MCU stands for Microcontroller Unit and Motor is a device that converts electrical energy into mechanical energy.

MCU is a small computer on a single integrated circuit used to control other devices.
Motor is a machine that converts electrical energy into mechanical energy.
Basic structure of MCU includes CPU, memory, input/output ports, timers, etc.
Basic structure of Motor includes stator, rotor, bearings, and shaft.
Examples of MCU: Arduino, Raspberry Pi
Examples of Motor: DC mo...read more

Q3. What is thermistor, diode, what's the difference between unidirectional & bi directional elements.

Ans.

A thermistor is a type of resistor whose resistance changes significantly with temperature, while a diode is a semiconductor device that allows current to flow in one direction only.

Thermistor: resistor with temperature-dependent resistance (ex. NTC thermistor)
Diode: semiconductor device allowing current flow in one direction (ex. silicon diode)
Unidirectional element: allows current flow in one direction only (ex. diode)
Bidirectional element: allows current flow in both direc...read more

Q4. What do you understand by Contol Panel

Ans.

A control panel is a device or interface used to control and monitor various systems or equipment.

A control panel typically consists of buttons, switches, dials, and indicators for user interaction.
It is commonly used in industrial settings to control machinery or processes.
Control panels can also be found in consumer electronics, such as microwave ovens or washing machines.
They are often designed to be user-friendly and intuitive for easy operation.

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Q5. What do you know about Electric Vehicle?

Ans.

Electric vehicles are vehicles that run on electric motors powered by rechargeable batteries, reducing reliance on fossil fuels.

Electric vehicles produce zero tailpipe emissions, reducing air pollution and greenhouse gas emissions.
They are more energy efficient than traditional internal combustion engine vehicles.
Examples of electric vehicles include Tesla Model S, Nissan Leaf, and Chevrolet Bolt.
Charging infrastructure for electric vehicles is expanding globally to support t...read more

Q6. What do you know about Motor ?

Ans.

A motor is a device that converts electrical energy into mechanical energy to produce motion.

Motors can be classified into different types such as AC motors and DC motors.
Common examples of motors include electric motors used in household appliances, industrial machinery, and vehicles.
Motors operate based on the principles of electromagnetism, where the interaction between magnetic fields generates motion.
Efficiency, power output, and speed are important factors to consider w...read more

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Q7. Difference between LFP & NMC

Ans.

LFP is Lithium Iron Phosphate and NMC is Lithium Nickel Manganese Cobalt Oxide. Both are types of lithium-ion battery chemistries.

LFP (Lithium Iron Phosphate) is known for its high thermal and chemical stability, making it safer than other lithium-ion chemistries.
NMC (Lithium Nickel Manganese Cobalt Oxide) offers higher energy density and longer lifespan compared to LFP.
NMC batteries are commonly used in electric vehicles for their balance of energy density and safety.
LFP bat...read more