Which of the systems having following transfer functions is stable ?
A. 1/(s2 + 2)
B. 1/(s2 – 2s + 3)
C. 1/(s2 + 2s + 2)
D. exp (-20s)/(s2 + 2s – 1)
Process Control and Instrumentation
Emission spectroscopy is used for__________________?
Emission spectroscopy is used for__________________?
A. Solids and metal analysis
B. Determining water purity
C. Determination of CO2 in gases
D. NOx determination
Starting temperature of optical radiation pyrometer is ______________ °C?
Starting temperature of optical radiation pyrometer is ______________ °C?
A. 800
B. 400
C. 1200
D. 1500
Strain gage pressure transducers are used to measure _____________ pressures?
Strain gage pressure transducers are used to measure _____________ pressures?
A. Gage as well as vacuum
B. Absolute as well as differential
C. Both A. and B.
D. Neither A. nor B.
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches ___________________?
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches ___________________?
A. -1
B. 0
C. 1
D. ∞
A mercury barometer measures the _____________ pressure?
A mercury barometer measures the _____________ pressure?
A. Atmospheric
B. Gauge
C. Vacuum
D. Absolute
The characteristic equation for the control system with a closed loop transfer function G1/1 + G2 is given by 1 + G2 = 0. The characteristic equation for the control system_________________?
The characteristic equation for the control system with a closed loop transfer function G1/1 + G2 is given by 1 + G2 = 0. The characteristic equation for the control system_________________?
A. Depends only upon the open loop transfer function
B. Determines its stability
C. Is the same for set point or load changes
D. All A , B & C.
Response of a system to a sinusoidal input is called _____________ response?
Response of a system to a sinusoidal input is called _____________ response?
A. Impulse
B. Unit step
C. Frequency
D. None of these
Polarograph is meant for the analysis of __________________?
Polarograph is meant for the analysis of __________________?
A. Gaseous mixture
B. Miscible liquids
C. Solids
D. Isotopes
Use of I-control along with P-control facilitates ?
Use of I-control along with P-control facilitates ?
A. Elimination of offset
B. Reduction of offset
C. Reduction of stability time
D. None of these