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Description : Explain the suitability of aluminium as an electrical conductor with respect to its mechanical and electrical properties. 

Last Answer : Following are requirements of conductor:- i) High conductivity :  Material should have high conductivity, So that * cross section of conductor (size) reduces, * Copper losses reduces, * So Efficiency ... . Boiling point is 1820°C 9. Specific gravity is 2.7 10. High resistance to corrosion. 

Description : State the modification to be done in dc series motor to work satisfactorily as ac series motor. State applications of ac series motor.

Last Answer : Modifications are necessary in a dc series motor so that it operates satisfactorily on ac supply. The modifications are as follows:  1) AC series motor is built with a few field turns as ... and grinders 5) High speed vacuum cleaners 6) Sewing machines 7) Food processors 8) Drilling machine 

Description : Explain the lighting scheme to be designed for each of the following: i) Special ward in hospitals ii) Dentist’s Cabin 

Last Answer : i) Special ward in hospital: For the patients in the wards, lighting should create a cozy and pleasant atmosphere. Lighting in the wards should be planned in such a way that it meets the specific ... we use such as cements and bonding agents that we use to restore your teeth back to health.

Description : What do you mean by active filter? State its advantages over passive filter . Define pass band & stop band with respect to filter.

Last Answer : Active Filter: Active Filter is formed by using active element along with the passive components.  Advantages of Active filter over Passive filter: High value of pass band gain can be obtained. It is ... pass band.  Stop Band Filter: The frequency range which is attenuated is known as stop band.

Description : Describe the concept of virtual ground with reference to op-Amp.

Last Answer : Virtual ground concept:-In circuit point A is virtual ground. Figure shows inverting amplifier using op-amp. In this circuit non-inverting terminal is connected to the actual ground. Due to ... zero potential without actually grounding is known as virtual ground concept. Circuit diagram: 

Description : Define Sample and hold period with reference to S/H circuit.

Last Answer : Sample Period:- The time period during which the voltage across the capacitor is equal to the input voltage is called sample period. Hold Period:- The time period during which the voltage across the capacitor is constant is called hold period.

Description : Delta to Star Conversion Example

Last Answer : Delta to Star Conversion Example

Description : Wye (Star) to Delta Conversion

Last Answer : Wye (Star) to Delta Conversion

Description : Delta to Wye Conversion

Last Answer : Delta to Wye Conversion

Description : Apply phasor analysis to evaluate the following

Last Answer : Apply phasor analysis to evaluate the following

Description : Use phasors to find

Last Answer : Use phasors to find

Description : Obtain the sinusoids corresponding to each of the following phasors

Last Answer : Obtain the sinusoids corresponding to each of the following phasors

Description : Transform the following sinusoids to phasors

Last Answer : Transform the following sinusoids to phasors

Description : Find the phasors corresponding to the following signals

Last Answer : Find the phasors corresponding to the following signals

Description : Star to delta conversion examples

Last Answer : Star to delta conversion example 1

Description : How does the resistance of a conductor compare to that of an insulator?

Last Answer : The resistance of a conductor can be significantly lower than the resistance of an insulator, depending on each material's atomic properties.

Description : How to find total impedance Z, current I and Impedance angle ?

Last Answer : How to find total impedance Z, current I and Impedance angle ?

Last Answer : When a conductor carries more current on the surface as compared to core, it is due to skin effect.