List the disadvantage or draw back of static error coefficient method

 Ans :

1) This method cannot give the error, if inputs are other than the 3 standard test inputs.

2) Most of the times, this method gives mathematical answer of the error as 0 (zero) or ∞ (infinite) and       hence does not provide precise value of the error.

3) This method does not provide variation of error with respect to time, which will be otherwise very useful             from design point of view.

✴  Because of these disadvantage dynamic error coefficient is developed which eliminates above this disadvantage.

Compare between Linear and Non-linear control system

 First of all we know that, what is linear control system ? : The control system which obey the superposition principle or theorem is called as or known as linear control system.

what is Non-linear control system ? : The control system which does not obey the superposition principle or theorem is called as or known as non-linear control system.

Linear control system

i) The system which obeys the superposition theorem principle is called linear control system.

ii) In the linear control system the output is proportional to the input.

iii) This linear control system is governed by linear differential equation.

iv) The linear control system can be analyzed by standard test signal.

v) The stability of linear control system depends only on root location.

vi) The linear control system do not exhibit limit cycles.

vii) The linear control system analyzed by Laplace transform, Z-Transform.

Non-linear control system

i) The system which does not obeys the superposition theorem principle is called non-linear control system.

ii) In the non-linear control system the output is not proportional to the input.

iii) This non-linear control system often governed by non-linear differential equation.

iv) The non-linear control system can not be analyzed by standard test signal.

v) The stability of non-linear control system depends on roots location, initial condition, and types of input.

vi) The non-linear control system exhibit limit cycles.

v) The linear control system cannot be analyzed by Laplace transform, Z-Transform.

                                                                

Differentiate between MOSFET and IGBT

 MOSFET

1) MOSFET stands for Metal-Oxide-Semiconductor Field Effect Transistor

2) The terminals of MOSFET are known as Gate, Source and Drain.

3) The MOSFET is less better in power handling.

4) The MOSFET does not have P-N junction.

5) The MOSFET has high forward voltage.

IGBT

1) The IGBT stands for Insulated Gate Bipolar Transistor.

2) The terminal of IGBT are known as Emitter, Collector and Gate.

3) The IGBT is better in power handling.

4) The IGBT has P-N junction.

5) The IGBT has low forward voltage.

Lets Discuss about the Differentiate between SCR (silicon controlled rectifier)/Thyristor and GTO (gate turn off thyristor)

SCR/Thyristor

1) The SCR stands for (silicon controlled rectifier)/Thyristor.

2) The SCR/Thyristor control only ON function.

3) The SCR/Thyristor uses only positive pulses.

4) In SCR/Thyristor there is need of bulky and costly commutation circuit, the limit it's use up to about 1kHz application.

5) The Value of latching current is comparatively less (the order of 100 to 500 mA)

6) The Reverse Voltage Blocking capability is more.

7) The turn off time can be divided into reverse recovery time and gate recovery time.

8) The gate triggering current is lower.

9) The efficiency of SCR circuit is low.

GTO 

1) The GTO stands for (gate turn off thyristor)

2) The GTO control both ON and OFF function.

3) The GTO uses both negative and positive pulses.

4) In GTO the commutation circuit is not required so therefore, it can be used beyond 1kHz application.

5) The Value of latching current is much more (The order of 2 to 4 A)

6) The Reverse Voltage Blocking capability is less.

7) The turn OFF time comprises of storage time, fall time and tail time.

8) The Gate triggering current is higher.

9) The efficiency of GTO circuit is more.

Let's Discuss About Difference in between SCR/Thyristor and TRIAC

SCR/Thyristor

1) The SCR stands for Or full form is Silicon Controlled Rectifier.

2) The SCR/Thyristor has four terminal semiconductor device.

3) The SCR/Thyristor is unidirectional device.

4) The SCR/Thyristor is more reliable.

5) The SCR/Thyristor required two heat sink.

6) The SCR/Thyristor is available in large rating.

7) In SCR/Thyristor uni-junction transistor is taken in used for triggering purpose.

8) The SCR/Thyristor control D.C power.

9) In SCR/Thyristor there is only one mode of operation is possible.

10) The SCR/Thyristor can operate in only one quadrant V-I characteristics.

11) The SCR/Thyristor can be triggered by positive gate voltage only.

TRIAC

1) The TRIAC stands for triode for alternating current.

2) The TRIAC has three terminal semiconductor device.

3) The TRIAC is a bidirectional device.

4) The TRIAC is less reliable.

5) The TRIAC required only one heat sink.

6) The TRIAC available in smaller rating.

7) In TRIAC the DIAC (Diode for Alternating Current) is used for triggering.

8) The TRIAC control D.C as well as A.C power.

9) In TRIAC there is four different modes of operation is possible.

10) The TRIAC can be operate only in two quadrant V-I characteristics.

11) The TRIAC can be triggered either by the positive or negative gate voltage.

Hope you know the difference between SCR/Thyristor and TRIAC very well.

we will meet you with next concept !!!

Discuss about the difference between Formal and Informal Communication

FORMAL COMMUNICATION 

1) It is official Communication

2) It demands certain principal and rules

3) It is time bound, Topic bound and language bound.

4) The conversation cannot beyond stipulated time.

5) The conversation is strictly based on the relevance purpose of communication.

For an example: Rakesh send an e-mail to his manager.

INFORMAL COMMUNICATION

1) It is generally friendly Communication.

2) It does not follow any rules and principles.

3) It is not time bound, Topic bound, and language bound.

4) The Communication can take place for long period of time.

5) It is more casual and general in nature.

For an example : Three friends are chatting about cinema.

Explain the Communication Cycle in detain with Example in simple way !!!

The Communication Cycle consists of following elements :

1) Sender

2) Receiver

3) Message

4) Feedback

1) Sender : A person who transfer his ideas, thought, information, Feelings, to the other person is known as sender.

Example. i) The teacher teaching English chapter in the class.

ii) Ramesh demanding sevpuri from his mother.

2) Receiver : The person who accepts the message from the sender is called as or known as receiver.

For an example. i) Father is giving money to Rohan.

ii) Sohan listen speech on the independence day.

3) Message : The thoughts and ideas exist in the mind of the sender in the form of instructions, feelings, knowledge, information.

Than the sender organize this thoughts and ideas in the proper format to be transfer to the receiver is called as message.

For an example. i) Rahul is asking maths notebook to Naresh.

ii) Sita demanding apple from his mother.

4) Feedback : The feedback is the most important and final link of the communication. If feedback is not there than communication cycle will not complete.

It is the most important factor in the communication cycle.

For an example. i) The teacher is asking question to Amit.

ii) Meets is asking for red pen to the father. {If father have pen than they will give it to her}.