## Calculate the voltage rating and magnetizing current, Electrical Engineering

Assignment Help:

1. For the flyback converter operating in the discontinuous "current" (flux) mode, derive an expression for the time at which the magnetizing current returns to zero.

2. A forward converter with a demagnetizing winding is designed to operate with a maximum duty cycle of D = 0.7. Calculate the voltage rating of the switch in terms of the input voltage.

#### Compute the efficiency of the motor, Q. A 10-hp, 230-V dc shunt motor takes...

Q. A 10-hp, 230-V dc shunt motor takes a full- load line current of 40 A. The armature and field resistances are 0.25 and 230 , respectively. The total brush-contact drop is 2 V,

#### Realize the function f by a k map using 0s, Q. Given the following truth ta...

Q. Given the following truth table: (a) Realize the function f by a K map using 0s. (b) Realize the function f by a K map using 1s.

#### Find how long the bulb can be lighted, Q A12-V, 115-Ah automobile storage b...

Q A12-V, 115-Ah automobile storage battery is used to light a 6-W bulb. Assuming the battery to be a constant-voltage source, find how long the bulb can be lighted before the batte

#### Determine the effective input noise temperature, Q Determine the effective ...

Q Determine the effective input noise temperature of a long piece of waveguide (that connects an antenna to a receiver) with a loss of 3.4 dB at 12 GHz and a physical temperature o

#### Explain the suitability of aluminium, Explain the suitability of aluminium ...

Explain the suitability of aluminium  that is used as electrical conducting materials. Aluminium : Conductors are appropriate for ambient and very high temperature. Use of alu

#### What are the cautions to be taken, What are the cautions to be taken before...

What are the cautions to be taken before starting work on electrical installations? Ans: Before starting any electrical works on installations disconnect the power supply to

#### Develop a open-loop model of the traction drive, how to derive its transfer...

how to derive its transfer function

#### Input output, Input output The parallelogram symbol  is used to repres...

Input output The parallelogram symbol  is used to represent the input output  process as shown  below.                 IN01H

#### P type material - semiconductor material, p type material: p type ma...

p type material: p type material is formed by doping aerial  crystal with impurity atoms having three valance electrons. The diffused impurities with three valence electrons

#### Determine the all-day efficiency, Q. A transformer has its maximum efficien...

Q. A transformer has its maximum efficiency of 0.9800 when it delivers 15 kVA at unity power factor. During the day it is loaded as follows: 12 hours 2 kW at power factor 0.5  