10+ Wipro Digital Interview Questions and Answers for Freshers

Optical fibre communication takes place at different wavelengths, with some providing better performance than others.

• Optical fibre communication can take place at various wavelengths, including 850 nm, 1310 nm, and 1550 nm.

• The 850 nm wavelength is commonly used for short-distance communication, such as within buildings or data centers.

• The 1310 nm wavelength is often used for medium-distance communication, such as metropolitan area networks.

• The 1550 nm wavelength is typically ...read more

Timers in microprocessors are hardware components that measure and control time intervals. They can be triggered by external events or programmed instructions.

• Timers in microprocessors are used for various purposes such as generating accurate time delays, measuring time intervals, and controlling the execution of tasks.

• They are typically implemented as hardware registers that count clock cycles or external events.

• Timers can be triggered by external events, such as a signal ch...read more

Interrupts in microprocessors are signals that temporarily halt the normal execution of a program to handle a specific event or request.

• Interrupts are used to handle time-critical events or to interface with external devices.

• They allow the microprocessor to respond to external stimuli without constantly checking for them.

• Interrupts have different priority levels and can be masked or enabled/disabled.

• Examples of interrupts include keyboard input, timer events, and hardware err...read more

The fundamental principle of an operational amplifier (OPAMP) is to amplify the difference between the input voltages.

• OPAMP amplifies the voltage difference between its two input terminals

• The output voltage of an OPAMP is proportional to the difference between the input voltages

• OPAMP has a high gain and high input impedance

• The input terminals of an OPAMP draw negligible current

• OPAMP operates in a closed-loop configuration to achieve desired amplification

Losses in optical fibre include attenuation, dispersion, and bending losses.

• Attenuation is the reduction in signal strength as it travels through the fibre.

• Dispersion is the spreading of the signal due to different wavelengths traveling at different speeds.

• Bending losses occur when the fibre is bent too tightly, causing signal loss.

• Other losses include splice losses, connector losses, and modal noise.

Servo motors are devices that convert electrical signals into precise mechanical motion.

• Servo motors are commonly used in robotics and automation systems.

• They consist of a motor, a control circuit, and a feedback mechanism.

• Servo motors are capable of rotating to a specific angle and maintaining that position.

• They are often used in applications that require accurate positioning, such as robotic arms or camera gimbals.

• Servo motors can be controlled using pulse width modulation ...read more

PWM stands for Pulse Width Modulation. It is a technique used to control the amount of power delivered to a device by varying the width of the pulse of a periodic signal.

• PWM is commonly used in electronic devices to control the speed of motors or the brightness of LEDs.

• It works by rapidly switching a signal between ON and OFF states at a fixed frequency.

• The ratio of the ON time to the total period is called the duty cycle, which determines the average power delivered.

• By adjus...read more

Optical fiber is a technology that uses thin strands of glass or plastic to transmit data as pulses of light.

• Optical fibers are made of a core, cladding, and a protective outer layer.

• Light signals are transmitted through the core of the fiber by bouncing off the cladding due to total internal reflection.

• Fiber optic cables can transmit data over long distances with minimal loss of signal strength.

• They are used in telecommunications, internet connections, cable television, and ...read more

It depends on the specifics of the policy.

• What is the coverage amount?

• What is the deductible?

• Are pre-existing conditions covered?

• What is the cost to employees?

• What is the network of providers?

• What is the policy on maternity leave?

• Is there a wellness program?