Design and Product Development Engineer Interview Questions and Answers

A zener diode is a type of diode that allows current to flow in the forward direction like a normal diode, but also in the reverse direction when the voltage reaches a certain threshold.

• Zener diodes are commonly used for voltage regulation and overvoltage protection in electronic circuits.

• They have a specific breakdown voltage, known as the zener voltage, at which they start conducting in the reverse direction.

• Zener diodes are often used in voltage regulator circuits to maint...read more

Single phase transformers have one primary and one secondary winding, while 3 phase transformers have three primary and three secondary windings.

• Single phase transformers are used in residential applications, while 3 phase transformers are used in industrial applications.

• Single phase transformers have a simpler design compared to 3 phase transformers.

• 3 phase transformers are more efficient and cost-effective for high power applications.

• Single phase transformers have a single ...read more

Injection moulding and rotomoulding are two types of moulding processes used in manufacturing.

• Injection moulding involves injecting molten material into a mould cavity under high pressure, commonly used for producing small to medium-sized plastic parts.

• Rotomoulding, or rotational moulding, involves rotating a hollow mould filled with material in an oven until the material coats the inside of the mould, commonly used for large, hollow plastic products like tanks and containers...read more

Development process is a series of steps taken to bring a product from concept to market.

• Research and ideation

• Concept development

• Prototyping and testing

• Design refinement

• Manufacturing and production

• Quality control and testing

• Launch and market introduction