10+ Interview Questions and Answers

Prepare for a coding test at Box with these helpful tips.

• Familiarize yourself with the programming languages and frameworks commonly used at Box, such as Java, Python, and JavaScript.

• Review data structures and algorithms, as they are often tested in coding interviews.

• Practice solving coding problems on platforms like LeetCode or HackerRank to improve your problem-solving skills.

• Research Box's engineering culture and values to align your answers with their expectations.

• Be prep...read more

Current is the flow of electric charge, measured in Amperes, while voltage is the potential difference between two points, measured in Volts.

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

• Voltage is the potential difference between two points in a circuit

• Current is measured in Amperes (A) while voltage is measured in Volts (V)

• Ohm's Law relates current, voltage, and resistance: V = IR

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Consists of two or more coils of insulated wire wound around a core

• Primary coil receives electrical energy and induces a magnetic field in the core

• Secondary coil receives the magnetic field and converts it back to electrical energy

• Used in power distribution, voltage regulation, and isolation in electronic circuits

Resistor is required at the terminal to limit the current flow and protect the circuit from damage.

• Resistor limits the current flow to protect the circuit

• Value of resistor depends on the circuit requirements

• Resistor can also be used for voltage division

A capacitor is an electronic component that stores and releases electrical energy.

• Capacitors consist of two conductive plates separated by an insulating material called a dielectric.

• They are used in circuits to store energy, filter out noise, and control the flow of current.

• Capacitors are rated by their capacitance, measured in farads (F).

• Common types of capacitors include ceramic, electrolytic, and tantalum capacitors.

CRO full form in Electronics Engineering is Cathode Ray Oscilloscope.

• CRO stands for Cathode Ray Oscilloscope

• It is a type of electronic test instrument used to observe varying signal voltages

• It displays a graph of an electrical signal in real-time

A rectifier is an electronic device that converts AC to DC voltage.

• Rectifiers are used in power supplies to convert AC voltage to DC voltage.

• They are commonly used in electronic devices such as radios, televisions, and computers.

• There are two types of rectifiers: half-wave and full-wave.

• Half-wave rectifiers only allow half of the AC waveform to pass through, while full-wave rectifiers allow the entire waveform to pass through.

• Rectifiers can be made using diodes or other semic...read more

A diode is a semiconductor device that allows current to flow in one direction only.

• Diodes are commonly used in rectifiers to convert AC to DC power.

• They are also used in signal processing, voltage regulation, and protection circuits.

• Examples include light-emitting diodes (LEDs) and photodiodes.

• Diodes can be used in logic gates and digital circuits for switching and signal processing.

CAN is a communication protocol used in automotive and industrial applications.

• CAN stands for Controller Area Network.

• It is a message-based protocol used for communication between electronic devices.

• CAN is used in automotive and industrial applications for tasks such as engine control, transmission control, and body control.

• It allows for high-speed communication between devices and is highly reliable.

• CAN uses a bus topology, where multiple devices are connected to a single co...read more

A half wave rectifier is a circuit that converts AC voltage to pulsating DC voltage by allowing only one half of the input waveform to pass through.

• The input AC voltage is applied to a diode which only allows current to flow in one direction.

• During the positive half cycle of the input waveform, the diode conducts and allows current to flow through the load.

• During the negative half cycle, the diode blocks current flow, resulting in no output.

• Examples of half wave rectifiers in...read more

LDR stands for Light Dependent Resistor. It is a type of resistor that changes its resistance based on the amount of light it is exposed to.

• LDRs are commonly used in light sensing applications, such as automatic street lights or camera exposure control.

• The resistance of an LDR decreases as the intensity of light increases.

• LDRs are often used in combination with other components like transistors or microcontrollers to create light-sensitive circuits.

A rectifier is an electronic device that converts AC to DC.

• Rectifiers are used in power supplies to convert AC voltage to DC voltage.

• They are commonly used in electronic devices such as radios, televisions, and computers.

• There are two types of rectifiers: half-wave and full-wave.

• Half-wave rectifiers only allow half of the AC waveform to pass through, while full-wave rectifiers allow the entire waveform to pass through.

• Examples of rectifiers include diodes, vacuum tubes, and s...read more