CONTROL SYSTEMS QUIZ

If a body has identical properties all over, it is known as

elastic.

none of them.

homogeneous.

isotropic.

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The device necessarily used for automatic temperature control in a furnace is

Thermocouple.

Auto-transformer.

Any of above.

Thermostat.

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Number of sign changes in the entries in 1st column of Routh array denotes the no. of

open loop zeroes in RHP.

roots of characteristic polynomial in RHP.

zeroes of system in RHP.

open loop poles in RHP.

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Which of the following is/are the disadvantages of an open loop control system?

Inaccurate.

None of these

Unreliable.

both 1 and 2.

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Which of the following are the disadvantages of a closed loop control system?

All of these

Reduces the overall gain.

Oscillatory response.

Complex and costly.

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At which frequency does the Bode magnitude plots for the functions K/S2 have gain crossover frequency

ω = √K rad/sec.

ω = 0 rad/sec.

ω = K rad/sec.

ω = K2 rad/sec.

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A lead compensator used for a closed loop controller has the following transfer function For such a lead compensator

a > kb.

a < kb.

a < b.

b < a.

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Number of roots in left hand half of s plane if characteristic equation is s3 - 4s2 + s + 6 = 0 ?

3.

1.

0.

2.

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Settling time for 5% tolerance band is -------------

3T.

5T.

2T.

4T.

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In the cauer-2 form of LC network---------is series element and --------is shunt element respectively?

L and C

C and C

C and L

L and L

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