Sedemac Mechatronics
10+ Sapphire Foods India Interview Questions and Answers
Q1. Find the output of the c code, related to char and ascii values. for(char c=0;c<500;c++) printf(‘%d’, c);
The code will print ASCII values of characters from 0 to 499.
The 'char' data type in C is used to store ASCII values of characters.
The 'printf' function with '%d' format specifier will print the ASCII value as an integer.
The loop will iterate from 0 to 499, printing the ASCII values of characters.
Q2. Puzzle: min no of ways to find heavier stone of 8 stones(7 weigh same).
Use a balance scale to compare groups of stones to find the heavier one.
Divide the stones into 3 groups of 3, 3, and 2 stones.
Weigh the 3 groups of 3 stones against each other.
If one group is heavier, weigh 2 of those stones against each other to find the heaviest one.
If the groups of 3 stones weigh the same, weigh the remaining 2 stones to find the heaviest one.
Q3. What is PCB and what is function of PCB components
PCB stands for Printed Circuit Board, it is a board made of non-conductive material on which electronic components are mounted and connected.
PCB provides mechanical support to electronic components
PCB provides electrical connections between components
PCB helps in reducing the size of electronic devices
Components on PCB include resistors, capacitors, diodes, transistors, etc.
Q4. puzzle: find heavier ball out of 8 (7 are identical) using min no of weighs on a scale
Use 2 weighs to find the heavier ball out of 8 (7 identical) on a scale
Divide the 8 balls into 3 groups: 3 balls, 3 balls, and 2 balls
Weigh the 2 groups of 3 balls against each other
If one group is heavier, weigh 2 balls from that group to find the heavier ball
If both groups of 3 balls weigh the same, weigh the remaining 2 balls to find the heavier one
Q5. Power supply Type? Soldering temperature for through hole component? Voltage Range 10 volt with 1 volt tolerance?
The power supply type should be specified along with the soldering temperature for through hole component and voltage range of 10 volts with 1 volt tolerance.
Power supply type should be mentioned as per the requirement of the device being tested.
Soldering temperature for through hole component should be specified as per the component datasheet.
Voltage range of 10 volts with 1 volt tolerance should be maintained during testing.
Ensure that the power supply is stable and does no...read more
Q6. How you define capacitor polarity
Capacitor polarity refers to the orientation of the positive and negative terminals on a capacitor.
Capacitors have a positive and negative terminal, with the positive terminal typically marked with a plus sign (+) or a longer lead
It is important to observe the polarity when connecting capacitors in a circuit to prevent damage or malfunction
Electrolytic capacitors are polarized, meaning they have a specific positive and negative terminal
Non-polarized capacitors, such as cerami...read more
Q7. What is resister
A resistor is an electronic component that resists the flow of electrical current.
Resistors are used to control the amount of current flowing in a circuit
They are measured in ohms (Ω)
Resistors can be fixed or variable, with variable resistors allowing for adjustable resistance
Examples of resistors include carbon film resistors, metal film resistors, and wirewound resistors
Q8. Functionality of SI/DI ENGINE, PHYSICS , ENGINE CONTROL UNIT, PHYSICS ETC.
The SI/DI engine is a type of internal combustion engine that uses spark ignition or direct injection for fuel combustion.
SI/DI engine refers to the type of fuel injection system used in an internal combustion engine.
Spark ignition (SI) engines use a spark plug to ignite the fuel-air mixture, while direct injection (DI) engines directly inject fuel into the combustion chamber.
Physics plays a crucial role in understanding the combustion process and optimizing engine performanc...read more
Q9. Function of capacitor
Capacitors store and release electrical energy in a circuit.
Capacitors store energy in an electric field
They can release this stored energy when needed
Capacitors are commonly used in filters, timing circuits, and power conditioning
Examples include smoothing out voltage fluctuations in power supplies
Q10. Function of inductor
An inductor is a passive electronic component that stores energy in a magnetic field when current flows through it.
Inductors resist changes in current flow
They are commonly used in filters, oscillators, transformers, and power supplies
Inductors are measured in Henry (H)
They have the ability to store energy in the form of a magnetic field
Q11. What is Insulator,Conductor etc
Insulators are materials that do not easily allow the flow of electricity, while conductors are materials that allow the flow of electricity.
Insulators have high resistance to electrical current.
Conductors have low resistance to electrical current.
Examples of insulators: rubber, glass, plastic.
Examples of conductors: copper, aluminum, gold.
Q12. What is resistance?
Resistance is the act of opposing or withstanding something.
Resistance can refer to the opposition to a force or influence.
It can also refer to the ability of a material to withstand wear, pressure, or damage.
Examples include electrical resistance in a circuit, resistance to antibiotics in bacteria, and resistance training in fitness.
Q13. What is KCL or KVL?
KCL stands for Kirchhoff's Current Law and KVL stands for Kirchhoff's Voltage Law, both are fundamental laws in electrical engineering.
KCL states that the total current entering a node is equal to the total current leaving the node.
KVL states that the sum of voltages around any closed loop in a circuit is equal to zero.
These laws are used to analyze and solve electrical circuits.
For example, in a simple circuit with a battery and resistors, KCL can be used to determine the cu...read more
Q14. Describe the ohm 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.
Ohm's Law is represented by the formula I = V/R, where I is the current in amperes, V is the voltage in volts, and R is the resistance in ohms.
It helps in calculating the current, voltage, or resistance in a circuit when the other two values are known.
For example, if a circuit has a voltage of 12...read more
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