Electronics Engineering

Electronics Engineering is a branch of engineering that deals with practical applications of electronic components, devices, systems, or equipment. Electronics are devices that operate on low voltage sources, as in electron tubes, transistors, integrated circuits, and printed circuit boards and use electricity as part of its driving force.

500 Questions

Does a printed circuit board have a feature?

User Avatar

Asked by Wiki User

A printed circuit board (PCB) is a flat board made of non-conductive material that holds electronic components and provides electrical connections between them. It serves as a base for assembling and mounting electronic circuits. The board features a network of copper traces or conductive pathways, called traces, that allow the flow of electrical signals and power between components on the board. PCBs are widely used in various electronic devices, ranging from smartphones and computers to industrial equipment and automobiles.

What does cmmr mean?

User Avatar

Asked by Wiki User

CMMR can have different meanings depending on the context. Here are a couple of common interpretations:

Common Mode Rejection Ratio (CMRR):

In electronics, particularly in the context of amplifiers, CMMR stands for Common Mode Rejection Ratio. It is a measure of an amplifier's ability to reject common mode signals (signals that are common to both input terminals). A high CMRR indicates that the amplifier is effective in rejecting unwanted common mode signals.

Capability Maturity Model Integration (CMMI):

CMMI is a process improvement approach that provides organizations with the essential elements of effective processes. CMMR, in this context, might be used informally as an abbreviation for Capability Maturity Model Integration, especially in the context of software development and project management.

If you have a specific context in mind, providing additional details may help in giving a more accurate interpretation of "CMMR."

What are the disadvantages of a series circuit?

User Avatar

Asked by Wiki User

Series circuits like a string of Christmas lights, can be very annoying. If one bulb in burnt out, broken, or unproperly screwed, the entirely will disconnect and the system will fail. Cheack out

What is fullform of PWM?

User Avatar

Asked by Wiki User

PWM stands for Pulse Width Modulation. It is a technique used in electronics to encode information in a pulsing signal. In PWM, the duration of a pulse in a waveform is varied to convey information. This method is commonly used to control the power delivered to electrical devices, such as motors, LEDs, and other components, by adjusting the average power over time.

What are packaging objective?

User Avatar

Asked by Wiki User

The objectives of packaging are multifaceted, reflecting the diverse roles that packaging plays in the production, distribution, and consumption of goods. Here are some key packaging objectives:

Product Protection:

Objective: Protect the enclosed product from external factors such as moisture, light, air, contaminants, and physical damage. This helps maintain product quality, safety, and integrity throughout the supply chain.


Objective: Preserve the freshness, flavor, and nutritional value of perishable goods. Packaging can create a controlled environment that extends the shelf life of products and prevents spoilage.

Safety and Security:

Objective: Ensure the safety and security of both the product and consumers. Packaging can include features such as tamper-evident seals and child-resistant closures to enhance safety.


Objective: Enhance consumer convenience during product use, storage, and transportation. Packaging may include features like resealable closures, easy-open designs, and portion control.

Identification and Communication:

Objective: Clearly communicate essential information about the product, including ingredients, nutritional facts, usage instructions, expiration dates, and branding. Packaging serves as a vehicle for product identification and information.

Promotion and Marketing:

Objective: Contribute to brand recognition and promote the product through effective branding, labeling, and visual appeal. Packaging design can influence consumer perceptions and purchasing decisions.

Efficient Handling and Distribution:

Objective: Facilitate efficient handling, storage, and transportation of products throughout the supply chain. Packaging should be designed to optimize space, reduce damage, and streamline logistics.

Regulatory Compliance:

Objective: Ensure compliance with local and international regulations related to product packaging. This includes requirements for labeling, safety standards, and environmental considerations.

Environmental Sustainability:

Objective: Minimize environmental impact by using eco-friendly materials, promoting recycling, reducing waste, and adopting sustainable packaging practices.


Objective: Achieve cost-effective packaging solutions without compromising the quality or functionality of the packaging. This includes considerations of material costs, production efficiency, and transportation costs.

Differentiation and Branding:

Objective: Differentiate the product from competitors and reinforce brand identity through unique and recognizable packaging designs.

Consumer Experience:

Objective: Enhance the overall consumer experience by providing packaging that aligns with consumer preferences, usability, and aesthetics.

These packaging objectives are often interrelated, and the optimal packaging solution depends on the specific characteristics of the product, industry regulations, market dynamics, and environmental considerations. Manufacturers and businesses aim to achieve a balance among these objectives to meet both functional and marketing requirements.

What types of Packaging are there?

User Avatar

Asked by Wiki User

Packaging comes in various forms and materials, each designed to suit the specific needs of different products and industries. Here are some common types of packaging:

Primary Packaging:

Definition: The layer of packaging in direct contact with the product (e.g., the packaging around a chocolate bar).

Examples: Bottles, cans, jars, blister packs, pouches, boxes for individual products.

Secondary Packaging:

Definition: The outer packaging that holds together multiple primary packaging units (e.g., a box containing several cereal boxes).

Examples: Cardboard boxes, paperboard cartons, shrink wrap.

Tertiary Packaging:

Definition: Packaging used for the bulk transportation or handling of multiple secondary packages (e.g., a pallet of shrink-wrapped boxes).

Examples: Pallets, stretch wrap, bulk containers.

Flexible Packaging:

Definition: Packaging made of materials that can easily change shape (e.g., plastic or foil pouches).

Examples: Stand-up pouches, sachets, blister packs, flexible film wraps.

Rigid Packaging:

Definition: Packaging that maintains its shape and provides a more solid structure (e.g., glass or plastic bottles, metal cans).

Examples: Glass jars, plastic bottles, metal cans, rigid plastic containers.

Aseptic Packaging:

Definition: Packaging that maintains the sterility of the product, often used for perishable goods.

Examples: Aseptic cartons, pouches, bags.

Biodegradable Packaging:

Definition: Packaging materials designed to break down naturally in the environment.

Examples: Biodegradable plastics, compostable packaging, plant-based materials.

Recyclable Packaging:

Definition: Packaging materials that can be collected, processed, and used to create new products.

Examples: Cardboard, paper, certain plastics, glass, metal.

Child-Resistant Packaging:

Definition: Packaging designed to prevent children from easily opening it, often used for safety with pharmaceuticals and certain household products.

Examples: Child-resistant caps, blister packs with push-through features.

Tamper-Evident Packaging:

Definition: Packaging designed to show visible signs of tampering or opening, ensuring the safety and integrity of the product.

Examples: Induction seals, shrink bands, tear strips.

Vacuum Packaging:

Definition: Packaging that removes air from around the product to extend shelf life and maintain freshness.

Examples: Vacuum-sealed bags, vacuum-sealed jars.

Retail Packaging:

Definition: Packaging designed for products displayed in retail environments, often emphasizing visual appeal.

Examples: Hanging blister packs, display boxes, shelf-ready packaging.

These categories represent a broad overview, and packaging solutions can often combine elements of different types to meet specific requirements. The choice of packaging depends on factors such as the nature of the product, transportation needs, environmental considerations, and consumer preferences.

What are the advantages and disadvantages of transformer?

User Avatar

Asked by Wiki User

Transformers play a crucial role in power transmission and distribution systems, enabling efficient voltage level conversion and safe power delivery. Distribution transformers, specifically, are designed to step down high-voltage power from transmission lines to a lower voltage suitable for distribution and utilization within a local area.

Advantages of Distribution Transformers:

Efficient Voltage Conversion: Distribution transformers efficiently convert high-voltage power from transmission lines to a lower voltage suitable for distribution and utilization within a local area. This process minimizes power losses during transmission and distribution, ensuring efficient power delivery to end consumers.

Isolation: Distribution transformers provide electrical isolation between the primary and secondary windings, preventing the transfer of faults or surges from the high-voltage side to the low-voltage side. This isolation protects equipment and personnel from potential hazards.

Voltage Regulation: Distribution transformers help maintain stable voltage levels within the distribution network, compensating for voltage fluctuations caused by varying load demands. This voltage regulation ensures the proper functioning of connected electrical appliances and equipment.

Low Maintenance: Distribution transformers are relatively low-maintenance devices, requiring minimal upkeep compared to other electrical components. Their robust construction and simple operation contribute to their long lifespan and reliable performance.

Environmentally Friendly: Distribution transformers contribute to a sustainable power grid by minimizing transmission losses, reducing energy consumption, and mitigating environmental impact.

Disadvantages of Distribution Transformers:

Limited Power Handling Capacity: Distribution transformers are designed to handle specific power ratings, and exceeding their capacity can lead to overheating and potential damage. Careful consideration of load requirements is essential to ensure proper transformer selection and operation.

Heat Generation: Distribution transformers generate heat during operation, which requires proper cooling systems to dissipate the heat effectively. Inadequate cooling can lead to reduced efficiency and potential transformer failure.

Sensitivity to Voltage Surges: Distribution transformers can be susceptible to damage from sudden voltage surges or spikes. Protective measures, such as surge arrestors, are often employed to safeguard transformers from these transient events.

Prabha Power: Your Reliable Source for Distribution Transformers in Guwahati

Prabha Power, a leading transformer supplier in Guwahati, offers a wide range of distribution transformers to meet the diverse needs of our customers. Our transformers are manufactured using high-quality materials and undergo rigorous testing to ensure their reliability and performance. We are committed to providing our customers with the best possible solutions for their power distribution requirements.

Contact Prabha Power today for expert advice on selecting the right distribution transformer for your application. We are dedicated to helping you achieve efficient and reliable power distribution in Guwahati and beyond.


Contact Us


House no, 79, Bhaskar Nagar,

Gopinath Nagar, Binowa Nagar,

Kala Pahar, Guwahati, Assam 781018

(+91) 8811000134

(+91) 9394879486

How can you see a race condition in the hardware?

User Avatar

Asked by Wiki User

To observe a race condition in hardware:

  1. Use simulation, formal verification, or emulation tools to identify potential issues.

  2. Monitor hardware behavior with logic analyzers, oscilloscopes, or in-circuit emulators.

  3. Employ debugging tools and instrumentation to detect irregularities in signal timing or synchronization.

What is the signal plan?

User Avatar

Asked by Wiki User

A "signal plan" is typically a document that outlines how signals are used or managed, whether in traffic control or communication systems. It specifies signal timings in traffic or signal allocation in communication networks.

What type of diode exhibits negative resistance?

User Avatar

Asked by Wiki User

A Tunneldiode, usually made of GaAS. In a part of its curve it has a negative resistance. This means that when you increase the voltage in that region, the current will drop.

What is the advantages of using the bridge rectifier over the center tapped rectifier?

User Avatar

Asked by Wiki User

you only use half the number of windings in the bridge comparing it to the center tapped , and in the bridge rectifier the peak inverse voltage that a diode must be able to sustain without break down is half of that in the center tapped

PIV per diode: center tapped: 2Vm

: bridge : 1Vm

What is difference between Rectangular Waveguide and Circular Waveguide?

User Avatar

Asked by Wiki User

Rectangular waveguide and circular waveguide are metal hollow structure used to guide EM waves. Depending upon their shapes they are classified as rectangular or circular. They are basically a passive microwave device and acts like a High Pass Filter.

Rectangular waveguide :

It is the earliest kind of the transmission lines.

It supports supports TM and TE modes.

It does not support TEM waves because it has only one conductor and cannot define a unique voltage.

Conductor is filled with a material that has material with permittivity e and permeability m.

Cutoff wavelength equation for is define below.

λc = 2/

Here, m= number of half-wave along broad side dimension,

N= number of half-wave along the shorter side.

Circular Waveguide:

It maintains a uniform circular cross section along their length.

The cutoff frequency is unique for a specific waveguide mode that is assumed to be propagating in a waveguide of a given diameter and determines the lower frequency of the waveguide’s operating frequency range.

The cutoff frequency is calculated using the following formula:

Which vacuum based device is widely used as a power amplifier in satellite communication system?

User Avatar

Asked by Wiki User

The Traveling Wave Tube Amplifier (TWTA) is widely used as a power amplifier in satellite communication systems. It amplifies signals in the microwave frequency range and is capable of providing high power output with low noise and distortion. TWTA technology has been utilized for several decades in satellite communication due to its reliable performance and efficiency.

What is the output impedance of common source amplifier circuit?

User Avatar

Asked by Wiki User

The output impedance of a common source amplifier circuit is typically high. This is because the common source amplifier uses a resistor to provide biasing, which results in a high output impedance. However, this can be mitigated by using a current source instead of a resistor for biasing.

What is unidirectional current controller?

User Avatar

Asked by Wiki User

A unidirectional current controller device is a type of electrical on/off switch. In order for an item to work that is plugged into a particular outlet, the switch must be in the on position. It is like having lamps plugged into outlets that are controlled by only one switch.

What is the lowest frequency that can be generated using mode 1 if the crystal frequency is 11.0592 MHz Show your calculations?

User Avatar

Asked by Wiki User

To calculate the lowest frequency that can be generated using mode 1, we need to divide the crystal frequency by two. So, the lowest frequency that can be generated in this case would be 11.0592 MHz divided by 2, which is equal to 5.5296 MHz.

When is the resistor bypass used in the ignition circuit?

User Avatar

Asked by Wiki User

The resistor bypass in the ignition circuit is used when starting the engine. It bypasses the resistor to provide full battery voltage to the ignition coil, ensuring a strong spark for a quick and reliable engine start. Once the engine is running, the bypass is no longer needed and the resistor is re-engaged to limit the voltage to the ignition coil for normal operation.

Can a 200 kHz unit work on a 192 kHz transducer?

User Avatar

Asked by Wiki User

No, a 200 kHz unit will not work on a 192 kHz transducer. The frequency of the unit and the transducer need to match in order for them to work together effectively.

What is the 555 IC timer measured in?

User Avatar

Asked by Wiki User

The 555 IC timer is typically measured in units of time, such as microseconds (µs), milliseconds (ms), or seconds (s). It can be used to generate precise timing intervals for various applications.

Why random signals are called power signals?

User Avatar

Asked by Wiki User

Random signals are called power signals because they have finite power, meaning they have a non-zero average power over time. Power signals are characterized by having a non-zero average energy density. This is in contrast to energy signals, which have finite energy but zero average power.

What is the full form of ITU in standards?

User Avatar

Asked by Wiki User

The full form of ITU in standards is the International Telecommunication Union. It is a specialized agency of the United Nations that focuses on developing international standards and regulations for telecommunications and information and communication technologies.

For a parallel plate capacitor is The poynting vector points everywhere radially outward of the volume between plates?

User Avatar

Asked by Jahnavi252

No, the Poynting vector does not point radially outward in the volume between the plates of a parallel plate capacitor. The Poynting vector represents the direction and flow of electromagnetic energy, and in the case of a static electric field between the plates, the Poynting vector is zero within the volume between the plates.

When tri state logic device is in the 3rd state then?

User Avatar

Asked by Wiki User

When a tri-state logic device is in the third or high-impedance state, it means that it is effectively disconnected from the circuit. This state allows multiple devices to share a common bus without interfering with each other. It is commonly used in buses and multiplexers to prevent conflicts and allow for efficient communication.

How does a transistor electronically switch the output on?

User Avatar

Asked by Wiki User

A transistor can electronically switch the output by controlling the flow of current between its two terminals, called the collector and emitter. It has a third terminal, called the base, which acts as a control input. When a small current is applied to the base terminal, it influences the flow of current between the collector and emitter terminals, effectively turning the transistor "on" or "off" and allowing it to change the output state.

PN junction diode made of silicon is the value of voltage depends exponentially on the current through the diode.?

User Avatar

Asked by Wiki User

No, the voltage across a silicon PN junction diode does not depend exponentially on the current through the diode. The relationship between voltage and current in a PN junction diode is described by the diode equation, which is an exponential relationship between current and the voltage across the diode. However, this relationship depends on factors such as the temperature and doping levels of the diode, in addition to the material used.