For an input forcing function, X(t) = 2t2, the Laplace transform of this function is________________?
A. 2/s2
B. 4/s2
C. 2/s3
D. 4/s3
Process Control and Instrumentation
Bode stability method uses ____________ loop transfer function?
Bode stability method uses ____________ loop transfer function?
A. Open
B. Closed
C. Either A. or B.
D. Neither A. nor B.
The unit step response of the transfer function 1/(s2 + 2s + 3) _______________________?
The unit step response of the transfer function 1/(s2 + 2s + 3) _______________________?
A. Has a non-zero slope at the origin
B. Has a damped oscillatory characteristics
C. Is overdamped
D. Is unstable
The operation of a Rotameter is based on ________________?
The operation of a Rotameter is based on ________________?
A. Variable flow area
B. Rotation of a turbine
C. Pressure drop across a nozzle
D. Pressure at a stagnation point
Which of the following fluid flow measuring devices can measure the largest flow rate ?
Which of the following fluid flow measuring devices can measure the largest flow rate ?
A. V-notch
B. Rotameter
C. Orificemeter
D. Weir
Which of the systems having the following transfer function is stable ?
Which of the systems having the following transfer function is stable ?
A. 1/(S2 + 2)
B. 1/(S2 – 2S + 3)
C. 1/(S2 + 2S + 2)
D. exp (-20 S)/(S2 + 2S – 1)
What is the dynamic error in a critically damped second order instrument for a ramp input (At) ?
What is the dynamic error in a critically damped second order instrument for a ramp input (At) ?
A. 0.5 AT
B. 2 AT
C. √(AT)
D. 1.5 AT
Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is ___________________?
Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is ___________________?
A. Chromel-alumel
B. Iron-constantan
C. Platinum-rhodium
D. Platinum-platinum + rhodium
An amplitude ratio of 0.1 corresponds to _____________ decibels?
An amplitude ratio of 0.1 corresponds to _____________ decibels?
A. 20
B. -20
C. 10
D. -10
Transfer function of transportation lag is___________________?
Transfer function of transportation lag is___________________?
A. eTS
B. e-TS
C. 1/(Ts + 1)
D. None of these