University of Engineering and Management Interview Questions, Process, and Tips

Hermitian operator is a mathematical concept in linear algebra and quantum mechanics where the operator is equal to its own conjugate transpose.

• Hermitian operator is a linear operator that is equal to its own conjugate transpose.

• In quantum mechanics, observables are represented by Hermitian operators.

• Hermitian operators have real eigenvalues and orthogonal eigenvectors.

• Example: The position operator in quantum mechanic

Forced vibration is when a system is subjected to an external force causing it to oscillate at a frequency different from its natural frequency.

• A common example of forced vibration is a child on a swing being pushed by a parent at a frequency different from the swing's natural frequency.

• Another example is a tuning fork being struck with a hammer, causing it to vibrate at a frequency determined by the force of the strik...read more

Transformer core loss is constant due to hysteresis and eddy current losses being independent of load.

• Core loss is mainly due to hysteresis and eddy current losses.

• Hysteresis loss is caused by the reversal of magnetization in the core material.

• Eddy current loss is caused by circulating currents induced in the core material.

• Both hysteresis and eddy current losses are independent of load, hence core loss is constant.

Short pitch factor is a measure of the ability of a player to hit the ball early or late in its flight.

• Short pitch factor is calculated by dividing the distance from the pitch to the point of impact by the total distance of the pitch.

• A high short pitch factor indicates that the player is able to hit the ball early in its flight, while a low factor indicates hitting the ball late.

• Short pitch factor is important in crick...read more