eControl Devices Interview Questions and Answers

Q1. How many ph mainten nickel crystal
Ans. 
The question is unclear and seems to be asking about the number of pH maintenance nickel crystals.
• It is unclear what 'ph mainten nickel crystal' refers to

• It is possible the interviewer made a mistake in phrasing the question

• Ask for clarification or provide an educated guess based on context
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Q2. How many ph mainten raw material dissolve in water and leaching time
Ans. 
pH maintenance raw materials dissolve in water and leaching time depend on the specific material and conditions.
• The number of pH maintenance raw materials that dissolve in water varies depending on the specific materials being used.

• Leaching time can also vary based on factors such as temperature, pH level, and agitation.

• Examples of pH maintenance raw materials include limestone, dolomite, and hydrated lime.
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Q3. How many mainten nickel gpl
Ans. 
The question is unclear and seems to be asking for the number of maintenance nickel GPL, which is not a standard term.
• It is unclear what 'mainten nickel GPL' refers to

• Ask for clarification or more context from the interviewer

• Provide examples of similar terms or concepts you are familiar with
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Q4. How many mainten nickel %
Ans. 
The question is unclear and seems to be asking for a percentage of maintenance nickel.
• Ask for clarification on what 'mainten nickel %' refers to

• Provide examples of different interpretations of the question

• Offer to discuss the topic further to gain a better understanding
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Q5. How many mainten solid % nickel
Ans. 
The question is unclear and lacks context. It seems to be asking about the percentage of nickel in a maintenance solid, but more information is needed for a precise answer.
• Request clarification on the type of maintenance solid being referred to (e.g. metal alloy, coating, etc.)

• Ask for the specific context in which the nickel percentage is relevant (e.g. for corrosion resistance, strength, etc.)

• Provide examples of diffe...read more
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General aptitude questions. Easy to solve. Didn’t take much time

Q1. Explain operation of rc circuit
Ans. 
An RC circuit consists of a resistor and a capacitor connected in series or parallel, used for filtering, timing, and signal processing.
• RC circuit operation is based on the charging and discharging of the capacitor through the resistor.

• When a voltage is applied to the circuit, the capacitor charges up to the applied voltage through the resistor.

• The time constant (RC) determines how quickly the capacitor charges or disc...read more
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Q2. Draw waveform for diode
Ans. 
A diode waveform typically shows a voltage drop when forward biased and no current flow when reverse biased.
• Forward biased: voltage drop across diode, current flows

• Reverse biased: no current flow, diode acts as open circuit
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Q1. Questions based on my project
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Basic questions not complicated need fundamental

Q1. What is resistance
Ans. 
Resistance is the opposition to the flow of electric current in a circuit.
• Resistance is measured in ohms (Ω).

• It is caused by collisions between electrons and atoms in a material.

• Higher resistance leads to lower current flow.

• Resistance can be controlled by changing the material, length, or cross-sectional area of a conductor.

• Examples of high resistance materials include rubber and glass, while copper and silver have low
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Q2. What is pcb and what is electronics
Ans. 
PCB stands for Printed Circuit Board, which is a board used to mechanically support and electrically connect electronic components. Electronics is the study and application of electrical circuits and devices.
• PCB is a board made of non-conductive material with conductive tracks for connecting electronic components.

• Electronics is the study and application of electrical circuits and devices.

• PCBs are used in various electr...read more
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Q3. About electronics industry
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Q4. About thecompany
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Q5. About the transistor
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Q1. Difference between wifi AC and Ax
Ans. 
Wifi AC is the 5th generation of wifi technology, while Wifi Ax is the 6th generation with improved speed and efficiency.
• Wifi AC operates on the 5 GHz band, while Wifi Ax operates on both 2.4 GHz and 5 GHz bands.

• Wifi Ax supports MU-MIMO (Multi-User, Multiple Input, Multiple Output) technology for better performance in crowded networks.

• Wifi Ax offers higher data rates and improved efficiency compared to Wifi AC.

• Wifi Ax ...read more
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Q2. What is called as DTIM?
Ans. 
DTIM stands for Delivery Traffic Indication Message, used in Wi-Fi networks to inform clients about the presence of buffered broadcast and multicast frames.
• DTIM is a parameter in the Wi-Fi beacon frame that indicates to clients how often they should wake up to receive broadcast and multicast traffic.

• It helps in saving battery life for devices by allowing them to sleep for longer periods of time.

• Clients can set their po...read more
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2 coding questions were given , Running atleast one question with all test cases passing is mandatory.

Q1. Bit manipulation question(asked to write atleast pseudo code)
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Q2. Array based question(asked to write atleast pseudo code)
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Q1. Plastic toolroom
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Q2. Mold Maintenance
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Q1. Plastic tool room
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Q2. Mold Maker interested
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Q1. Plastic tool maker
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Q2. Plastic maker job
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We should know basics of electronoics and also some aptitude questions

Q1. Difference between latch and flipflop
Ans. 
Latch is level sensitive and stores data temporarily, while flip-flop is edge triggered and stores data permanently.
• Latch is level sensitive, while flip-flop is edge triggered

• Latch stores data temporarily, while flip-flop stores data permanently

• Latch has a transparent latch, while flip-flop has a clocked latch
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Q2. Difference between task and function
Ans. 
Tasks are parallelizable and can be executed concurrently, while functions are sequential and executed in a linear manner.
• Tasks can be executed in parallel, while functions are executed sequentially.

• Tasks can have multiple entry points, while functions have only one entry point.

• Tasks can have multiple exit points, while functions have only one exit point.

• Tasks can be called multiple times concurrently, while functions ...read more
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