The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is

Process Control and Instrumentation
The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is

2

1

3

4

2

1

3

4

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Process Control and Instrumentation
The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is

π/12

π/6

5π/12

π/3

π/12

π/6

5π/12

π/3

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Process Control and Instrumentation
Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.

87.5

95

63.2

100

87.5

95

63.2

100

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Process Control and Instrumentation
The unit of 'time constant' of a system is the same as that of

Velocity

(time)⁻¹

Time

None of these

Velocity

(time)⁻¹

Time

None of these

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Process Control and Instrumentation
Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C?

Thermocouples

Photoelectric pyrometer

Radiation pyrometer

Optical pyrometer

Thermocouples

Photoelectric pyrometer

Radiation pyrometer

Optical pyrometer

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Process Control and Instrumentation
Phase lag of the sinusoidal response of a first order system is

30°

180°

120°

90°

30°

180°

120°

90°

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Process Control and Instrumentation

Process Control and Instrumentation The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is

Process Control and Instrumentation The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is

Process Control and Instrumentation Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.

Process Control and Instrumentation The unit of 'time constant' of a system is the same as that of

Process Control and Instrumentation Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C?

Process Control and Instrumentation Phase lag of the sinusoidal response of a first order system is

Process Control and Instrumentation
The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is

Process Control and Instrumentation
The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is

Process Control and Instrumentation
Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.

Process Control and Instrumentation
The unit of 'time constant' of a system is the same as that of

Process Control and Instrumentation
Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C?

Process Control and Instrumentation
Phase lag of the sinusoidal response of a first order system is