The second order system with the transfer function 4/(s2 + 2s + 4) has a damping ratio of ________?
0A.0.5
B.2.0
C.4.0
D.1.0
Explanation: The correct answer is 0.5.
Submitted by: Academy of Pakistan
Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 279 of 557.
Chemical Engineering MCQs
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A.Acceleration
B.Neither A. nor B.
C.Both A. & B.
D.Velocity
Explanation: The correct answer is Acceleration.
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A.Nitrogen dioxide
B.Photochemical smog
C.Sulphur dioxide
D.Dust particles
Explanation: The correct answer is Photochemical smog.
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A.Flow nozzle
B.Orificemeter
C.All of them incur the same head loss
D.Venturimeter
Explanation: The correct answer is Orificemeter.
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A.None of these
B.High pressure
C.High temperature
D.Low film co-efficient
Explanation: The correct answer is Low film co-efficient.
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A.5000
B.3000
C.1000
D.10000
Explanation: The correct answer is 10000.
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A.Phosphorus content
B.Reactivity with O2
C.Abradability
D.Volatile matter content
Explanation: The correct answer is Reactivity with O2.
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A.Permits the use of high ash content coal
B.All A., B. and C.
C.Accelerates the burning rate and economises on fuel consumption
D.Permits the use of low fusion point ash coal
Explanation: The correct answer is Accelerates the burning rate and economises on fuel consumption.
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A.Butane & ethane
B.Methane & ethane
C.Propane & butane
D.Methane & carbon monoxide
Explanation: The correct answer is Propane & butane.
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A.Wet
B.Ultrafine
C.Intermediate
D.Dry
Explanation: The correct answer is Dry.
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A.35 to 45
B.25 to 35
C.1 to 5
D.10 to 20
Explanation: The correct answer is 10 to 20.
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A.Copper-constantan
B.Platinum-platinum + rhodium
C.Aluminium-Chromel
D.None of these
Explanation: The correct answer is Platinum-platinum + rhodium.
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A.Conversion of pressure head to kinetic head is facilitated
B.Power transmitted through the nozzle is maximum, when the head lost due to friction in the
C.Both B. and C.
D.Conversion of kinetic head to pressure head is facilitated
Explanation: The correct answer is Both B. and C..
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A.Temperature control
B.Measurement of flue gas volume
C.Movement of gases
D.Pressure adjustment
Explanation: The correct answer is Movement of gases.
Submitted by: Academy of Pakistan
A.H = 1840 D0.5/N
B.D = 1840 N/H0.5
C.D = 1840 H/N
D.D = 1840 H0.5/N
Explanation: The correct answer is D = 1840 H0.5/N.
Submitted by: Academy of Pakistan