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What is the advantage of using soft starters?
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Answer :

Starters are used with D.C. motors because to restrict armature current as there is no back e.m.f. while starting.

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What is the difference between a soft start and a VFD?

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Description :

What is a soft start?

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Description :

Explain selection of starters for Industrial Installation. 

Answer :

selection of starters for Industrial Installation: Every motor must be provided with a starter to start and stop the motor. It shall be within the sight of a person at the motor. It shall be so arranged as ... -Auto transformer starter  Slip ring I.M.------------------Rotor resistance starter

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Description :

State starters used for i) 3-Ph squirrel cage induction motor (3HP) ii) D.C. motor 

Answer :

Name the starters used for following motors : i) 3 H.P. 3-Ph squirrel cage I.M: i) DOL starter OR ii) Star-Delta Starter OR ii) Auto transformer starter OR iii) Soft start starter.  ii) D.C Shunt Motor : 1) Armature resistance starter (Three Point Starter) OR 2) Four Point Starter 

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Description :

State any four advantages of soft starter.

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Advantages of soft starter: 1. Very low line voltage drops on motor operation 2. Reduced energy losses in the lines 3. System efficiency increases 4. Very smooth starting & operation 5. As ... may lead to lower MD billing. 13. Less mechanical maintenance. 14. Saving in operating costs.

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What is the advantage of AC over DC electrical transmission?

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What is the advantage of differential amplifier?

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Description :

What is the advantage of high power factor?

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Reduced copper losses Smaller conductor size Improve voltage regulation Increase system capability Less energy bill

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Description :

Write one advantage and one disadvantage each for spring control method and gravity control method.

Answer :

Advantages of Spring Control Method: 1) The spring-controlled meters may be used in any position. 2) In some instruments, springs can be used as current leads. 3) As springs are light in weight ... only. 2) Scale is non-uniform. 3) Control weights add to the weight of instrument.

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Description :

List one advantage and one disadvantage of one wattmeter method. 

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Advantages:  1) Only one wattmeter is used.  2) Less number of connections.  3) Cost required is less.  Disadvantages:  1) Used only for 3- Φ balanced load and not for ... be accessible for connecting the Pressure coil.  3) Delta connection must be opened to connect current coil. 

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Description :

The main advantage of AC over DC is:  (A) Conversion flexibility from one voltage level to other (B) AC can be easily converted into DC by using a rectifier (C) AC is easy to maintain & can be easily distributed at long distances (D) All of the above

Answer :

Ac is easy to maintain and ac can be easily converted to dc by rectifier .There is no commutator for conversion in ac that's why ac machines are weight less and more efficiency.ac machines occupy less space than dc .

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Description :

What are the advantages of using Linux?

Answer :

Advantages of Linux are as follows :Linux is open source and free.Linux Is multiuser and multitasking operating system.Linux is the stable operating system.Linux is reliable.Linux can be modify according to requirements.Linux is the secure operating system.

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Description :

Draw & explain touch plate switch using IC555.

Answer :

It is construct form monostable multivibrator , when metal plates touch by finger then voltage at pin number 2 goes to below 1/3 Vcc then output of lower comparator becomes high hence flip flop set and ... then output of timer goes low and it low till up to the metal plates touch by finger .

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Sinusoidal Steady-State Analysis - Using nodal analysis, find node voltages in the circuit.

Answer :

Sinusoidal Steady-State Analysis - Using nodal analysis, find node voltages in the circuit.

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A parallel RLC circuit has the node equation Determine v(t) using the phasor method.

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A parallel RLC circuit has the node equation Determine v(t) using the phasor method.

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Using phasors, determine in the following equations

Answer :

Using phasors, determine in the following equations

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Find current through resistor using nodal analysis

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Logic Simplification Using Boolean Algebra

Answer :

Logic Simplification Using Boolean Algebra 1 : https://youtu.be/fuoSMm2dJMc Logic Simplification Using Boolean Algebra 2 : https://youtu.be/bfCdur2QcJ4 Logic Simplification Using Boolean Algebra 3 : ... .be/V02wz8gz1UU Logic Simplification Using Boolean Algebra 7 : https://youtu.be/rgnJKgFO-SU

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Description :

Build using minimum number of CMOS gates. Three input NAND gate. Two input NOR gate Three input NOR gate Two input AND gate Two input OR gate

Answer :

Three input NAND gate. Two input NOR gate Three input NOR gate Two input AND gate Two input OR gate

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Answer :

The disc of an instrument using eddy current damping should be of conducting and non-magnetic material.

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Answer :

The speed of a universal motor is generally reduced by using gear trains.

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Description :

Answer :

No we cannot turn off normal thyristor using Gate.

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Description :

The advantage of detergents over soaps is (1) Detergents are soluble in water (2) Detergents could not give much lather (3) Detergents give lather even with hard water (4) Soaps give lather with only soft water

Answer :

Detergents give lather even with hard water

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Description :

Can you guys explain the advantages of frequency converter against the star delta or soft starter?

Answer :

¬Soft starters  A soft starter is, as you would expect, a device which ensures a soft starting of a motor. A softstarter has different characteristics to the other starting ... at rated current from zero to full speed. Frequency converters are becoming cheaper all the time.

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Description :

Hard water and soft water can be distinguished by using (1) dilute acid (2) ordinary soap (3) detergent (4) liquid soap

Answer :

detergent

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Description :

Important advantage of using new and delete operation in C++ is (A) Allocation of memory (B) Frees the memory previously allocated (C) Initialization of memory easily (D) Allocation of memory and frees the memory previously allocated.

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Description :

Which of the following is the advantage of using CRGO steel in transformers? A) High magnetic flux density B) Low permeability C) Both A and B D) None of these

Answer :

It definitely High Magnetic Flux Density since a crgo steel has always a more around 3% of silicon proportion among the remaining ferrite which make cold rolled grain oriented steel having high flux magnetic ... for more about the crgo core you can learn here https://nicoreindia.com/crgo-core/

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Description :

The advantage of using pulverized fuel include   (a) Higher boiler efficiency (b) Easy and complete combustion (c) Low air requirement (d) All of the above 

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Description :

Describe the reason of using dc series motor for electric trains.

Answer :

Electric trains require an inverse torque speed characteristics for proper operation. That is a higher torque is required at start (when speed is nil or low) and as the train picks up ... torque - speed characteristics of DC series motors match, these motors are suitable for electric trains

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Description :

In star-star connection of 3-phase transformer, the triplen harmonics are suppressed by using (A) star connected tertiary windings (B) delta connected tertiary windings (C) neutral conductor (D) additional insulation for the phases 

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Description :

For using regenerative breaking, the most suitable motor is :  (A) DC series motor  (B) Slip ring induction motor  (C) Squirrel cage induction motor  (D) Synchronous motor

Answer :

For using regenerative breaking, the most suitable motor is : Slip ring induction motor

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Description :

Slot harmonics are reduced in induction motors by using (A) fractional-pitch windings (B) fractional-slot windings (C) integral-slot windings (D) distributed windings

Answer :

Slot harmonics are reduced in induction motors by using fractional-slot windings

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Answer :

The speed of a universal motor is usually reduced by using gearing.

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Description :

Answer :

If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then Electrolytic capacitor will, in all probability, suffer break down.

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Description :

How can we improve power factor using synchronous motor?

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Description :

When you met an accident with the bicycle of a tiny school-going child, then what will you do? Options: A) You will run away from the place immediately B) You will take care of your-self but not of the child's injuries C) You will scold the child and take advantage of being an elder D) You will accept your mistake and extend whole hearted, support to the young child

Answer :

D) You will accept your mistake and extend whole hearted, support to the young child

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Description :

Answer :

A flowchart is a type of diagram that represents an algorithm, workflow or process. The flowchart shows the steps as boxes of various kinds, and their order by connecting the boxes with arrows. This diagrammatic representation illustrates a solution model to a given problem.

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Description :

A full bladder is roughly the size of a soft ball. No wonder you have to run to bathroom when you feel the call of the wild. The average bladder holds about 400-800 cc of fluid but most people will feel the urge to go long before that at 250 to 300 cc.

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Description :

Which of the following statement is correct? (A) Communicator should have fine senses (B) Communicator should have tolerance power (C) Communicator should be soft spoken (D) Communicator should have good personality

Answer :

(A) Communicator should have fine senses

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Description :

1. Soft drinks such as cocoa contain singnificant quantities of which thing? 2. By whom is the Chairman of the Public Accounts Committee of the Parliament appointed? 3. How must be the The lines of force of a uniform magnetic field? 4. The Varansi Kanyakumari National Highway is called which national highway? 5. ... ' used? 19. Which planet takes the same number of days for rotation and revolution? 20. Which element of Hinduism was practised in the Indus Valley Civilization?

Answer :

Answer : 1. Caffein 2. Speaker of Lok Sabha 3. Parallel to each other 4. NH 7 5. Thomas Best 6. Astrophysics 7. French 8. Pollination 9. Fourth 10. Jamshedpur 11. Speaker of Lok Sabha 12. ... income 14. Venus 15. Dadabhai Naoroji 16. UNDP 17. Biotechnology 18. Nowhere 19. Venus 20. Cult of Shiva

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Description :

Consider the following statements S1 and S2 : S1 : A hard handover is one in which the channel in the source cell is retained and used for a while in parallel with the channel in the target cell. S2 : A soft handover is one in which the channel in the source cell is released and only then the channel in the target cell is engaged. (A) S1 is true and S2 is not true. (B) S1 is not true and S2 is true. (C) Both S1 and S2 are true. (D) Both S1 and S2 are not true.

Answer :

(D) Both S1 and S2 are not true.

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