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Test: Block Diagram Algebra - Electrical Engineering (EE) MCQ


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10 Questions MCQ Test - Test: Block Diagram Algebra

Test: Block Diagram Algebra for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Test: Block Diagram Algebra questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Block Diagram Algebra MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Block Diagram Algebra below.
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Test: Block Diagram Algebra - Question 1

Consider the block diagram shown below:

If the transfer function of the system is given by T(s)=G1G2+G2G3/1+X. Then X is: 

Detailed Solution for Test: Block Diagram Algebra - Question 1

Explanation: Use the technique of making two different block diagram by dividing two summers and use the approaches of shifting take off point and blocks.

Test: Block Diagram Algebra - Question 2

For the block diagram given in the following figure, the expression of C/R is:

Detailed Solution for Test: Block Diagram Algebra - Question 2

Explanation: Block diagram is being converted into signal flow graphs by considering each take off point as a node and each forward transfer function as forward gain.

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Test: Block Diagram Algebra - Question 3

The transfer function from D(s) to Y(s) is :

Detailed Solution for Test: Block Diagram Algebra - Question 3

Explanation: Y(s)/D(s)=2/3s+1/1+3*(2/3s+1)=2/3s+7.

Test: Block Diagram Algebra - Question 4

The closed loop gain of the system shown in the given figure is :

Detailed Solution for Test: Block Diagram Algebra - Question 4

Explanation: C(s)/R(s)=-3/1+3/2=-6/5.

Test: Block Diagram Algebra - Question 5

The advantage of block diagram representation is that it is possible to evaluate the contribution of each component to the overall performance of the system.

Detailed Solution for Test: Block Diagram Algebra - Question 5

Explanation: The advantage of the block diagram is that it is possible to get the contribution of each block to the overall performance of the system.

Test: Block Diagram Algebra - Question 6

The overall transfer function from block diagram reduction for cascaded blocks is :

Detailed Solution for Test: Block Diagram Algebra - Question 6

Explanation: Gain of block get multiplied when they are cascaded where cascaded means that the blocks are in series combination with no summer in between.

Test: Block Diagram Algebra - Question 7

The overall transfer function of two blocks in parallel are :

Detailed Solution for Test: Block Diagram Algebra - Question 7

Explanation: The gains get added as the blocks are connected in parallel with the summer in between and they are connected with the same sign.

Test: Block Diagram Algebra - Question 8

Transfer function of the system is defined as the ratio of Laplace output to Laplace input considering initial conditions________

Detailed Solution for Test: Block Diagram Algebra - Question 8

Explanation: By definition transfer function is the ratio of the laplace output to the input but the initial conditions mainly the stored energy is zero.

Test: Block Diagram Algebra - Question 9

In the following block diagram, G1=10/s G2=10/s+1 H1=s+3, H2=1. The overall transfer function is given by :
  

Detailed Solution for Test: Block Diagram Algebra - Question 9

Test: Block Diagram Algebra - Question 10

Oscillations in output response is due to :

Detailed Solution for Test: Block Diagram Algebra - Question 10

Explanation: Oscillations are the unwanted sinuoidal signals with high gain in positive feedback and s the damping factor is absent in the positive feedback system entirely oscillations are present.

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