91. The orsat apparatus is used for measuring:
(a) chemical analysis of flue gases
(b) moisture in air
(c) composition of alloys
(d) colour spectrum
(e) molecular configuration.
Ans: a
92. The error caused in vibration measuring equipment due to non compliance (not stiff) of bond made between sensor and the surface it is mounted is called :
(a) cross-coupling
(b) coupling compliance
(c) influence error
(d) subject loading by sensor
(e) spurious variation in capacitance.
Ans: b
93. Machine health monitoring is mainly based on measurement of:
(a) lub oil pressure
(b) vibrations at strategic points
(c) bearing temperature measurement
(d) efficiency and losses of machine
(e) all of above.
Ans: b
94. Mass-spring seismic sensors measure directly the :
(a) displacement
(b) velocity
(c) acceleration
(d) shock
(e) force.
Ans: c
95. An operation which, in the presence of a disturbing influence, tends to reduce the difference between the actual state of a system and an arbitrarily varied desired state and which does so on the basis of this difference, is called :
(a) automatic control
(b) feedback control
(c) open feed back control
(d) closed feed back control
(e) self regulation.
Ans: d
96. An apparatus which measures the value of a quantity or condition which is subject to change with time, and operates to maintain within limits this measured value, is called
(a) automatic regulator
(b) self controller
(c) feedback controller
(d) two-position controller
(e) floating regulator.
Ans: a
97. The time required for the controlled variable to reach a specified value after the application of a step input is called :
(a) rise time
(b) settling time
(c) response time
(d) peak time
(e) proportional time.
Ans: c
98. The operating characteristic which inherently assists the establishment of equilibrium is called :
(a) corrective action
(b) self regulation
(c) automatic regulation
(d) proportional control action
(e) floating controller action.
Ans: b
99. The quantity or condition of the controlled system which is directly, measured or controlled :
(a) set point
(b) deviation
(c) controlled variable
(d) command signal
(e) control agent.
Ans: c
100. The range of values through which the variable must change to cause the final control element to move from one extreme position to the other :
(a) throttling range
(b) disturbance
(c) proportional band
(d) response
(e) deviation.
Ans: a
(a) chemical analysis of flue gases
(b) moisture in air
(c) composition of alloys
(d) colour spectrum
(e) molecular configuration.
Ans: a
92. The error caused in vibration measuring equipment due to non compliance (not stiff) of bond made between sensor and the surface it is mounted is called :
(a) cross-coupling
(b) coupling compliance
(c) influence error
(d) subject loading by sensor
(e) spurious variation in capacitance.
Ans: b
93. Machine health monitoring is mainly based on measurement of:
(a) lub oil pressure
(b) vibrations at strategic points
(c) bearing temperature measurement
(d) efficiency and losses of machine
(e) all of above.
Ans: b
94. Mass-spring seismic sensors measure directly the :
(a) displacement
(b) velocity
(c) acceleration
(d) shock
(e) force.
Ans: c
95. An operation which, in the presence of a disturbing influence, tends to reduce the difference between the actual state of a system and an arbitrarily varied desired state and which does so on the basis of this difference, is called :
(a) automatic control
(b) feedback control
(c) open feed back control
(d) closed feed back control
(e) self regulation.
Ans: d
96. An apparatus which measures the value of a quantity or condition which is subject to change with time, and operates to maintain within limits this measured value, is called
(a) automatic regulator
(b) self controller
(c) feedback controller
(d) two-position controller
(e) floating regulator.
Ans: a
97. The time required for the controlled variable to reach a specified value after the application of a step input is called :
(a) rise time
(b) settling time
(c) response time
(d) peak time
(e) proportional time.
Ans: c
98. The operating characteristic which inherently assists the establishment of equilibrium is called :
(a) corrective action
(b) self regulation
(c) automatic regulation
(d) proportional control action
(e) floating controller action.
Ans: b
99. The quantity or condition of the controlled system which is directly, measured or controlled :
(a) set point
(b) deviation
(c) controlled variable
(d) command signal
(e) control agent.
Ans: c
100. The range of values through which the variable must change to cause the final control element to move from one extreme position to the other :
(a) throttling range
(b) disturbance
(c) proportional band
(d) response
(e) deviation.
Ans: a
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