Characteristic equation is the denominator of __________ loop transfer function.

If 3 is added to both numerator and denominator of a fraction , it becomes 5/7. If 9 is subtracted from both numerator and denominator, it becomes 1/3. What is the fraction ?

A

15/21

B

12/18

C

18/32

D

10/17

If 3 is added to both the numerator & the denominator of a fraction, it becomes 5/7. If 9 is subtracted from both the numerato & denominator, it become 1/3. What is the fraction?

A

15/21

B

12/18

C

18/32

D

10/17

The denominator of a fraction is 5 more than the numerator. If the numerator as well as the denominator is increased by 3, the fraction becomes 5/9. The original fraction is

A

11/18

B

13/18

C

15/18

D

16/18

If the numerator of a fraction is increased by 2 and the denominator by 1 it becomes 1. Again, if the numerator decreased by 4 and the denominator by 2 it becomes 1/2 Find the fraction.

A

4/5

B

5/6

C

6/7

D

7/8

In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is

A

$$\frac{{\text{G}}}{{1 + {\text{H}}}}$$

B

$$\frac{{\text{H}}}{{1 + {\text{G}}}}$$

C

$$\frac{{\text{G}}}{{\text{H}}}$$

D

$$\frac{{\text{H}}}{{\text{G}}}$$

Bode stability method uses __________ loop transfer function.

A

Open

B

Closed

C

Either A or B

D

Neither A nor B

Routh stability method uses __________ loop transfer function.

A

Open

B

Closed

C

Either A or B

D

Neither A nor B

__________ stability method uses open loop transfer function.

A

Nyquist

B

Mikhalov

C

Ruth

D

None of these

What are the three important manipulations done in a for loop on a loop variable?

A

Updation, Incrementation, Initialization

B

Initialization,Testing, Updation

C

Testing, Updation, Testing

D

Initialization,Testing, Incrementation

A closed loop system is distinguished from open loop system by which of the following ?

A

Servomechanism

B

Feedback

C

Output pattern

D

Input pattern

Characteristic equation is the denominator of __________ loop transfer function.

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