Update Flashcards

1
Q

The size of a system has no effect on the process reaction rate

A

false

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2
Q

out of the four characteristics which one does not affect the performance of the controlled in the automatic controlled system?

A

distance

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3
Q

what controls the amount of water flowing past the point during an interval of time

A

rate of control

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4
Q

what are two types of electrical power devices that position final control elements

A

solenoid and electric motor

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5
Q

a controlled volume pump output is proportional to the square of its input speed

A

false

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6
Q

a better solution for mechanical reset for a device is to have it reset manually rather than automatically

A

false

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7
Q

which three is a mode of controlling

A

on/off
proportional plus reset,
proportional plus reset plus rate

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8
Q

monometer is a pressure gauge that responds to large pressure changes

A

false

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9
Q

a bell type gauge is

A

sensitive
accurate
stable

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10
Q

what is not a usual element filled temperature system

A

bi metal strip

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11
Q

what type electronic temperature sensor make use of voltage crated by joining two dissimilar metals

A

thermocouple

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12
Q

electric liquid level controllers can be used for

A

low and high level alarms,
discrete level indications,
operate pumps

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13
Q

velocity of slow equations

A

v=square root 2G*H

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14
Q

a choke provides fixed flow control

A

true

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15
Q

the electrical analog output of the tlc is like the transmitters output

A

2 to 20 milliamp signal

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16
Q

the rate at which the small plunger of the compensating dashpot returns to normal is usually determined by the setting of the

A

needle valve

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17
Q

the compensating dashpot serves to prevent over-travel or hunting of the gates by

A

re-centering the pilot valve

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18
Q

when using an ohm meter short the leads together and set the meter to read ___ while adjusting the zero adjustment knob.

A

zero ohms

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19
Q

power factor measures

A

the watts over volts ampers

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20
Q

in absents of a power factor meter power factor of a load can be determined by a

A

watt meter, amp meter, volt meter

21
Q

thermocouple produces a flow of current when the junction is

A

heated

22
Q

the speed in which the syncroscope indicator is rotating is affected by

A

Look up

23
Q

the steel core of an acsr conductor does not

A

carry any appraisable load current

24
Q

suspension type insulators have the ability to withstand

A

flash over, thermoshock, and mechanical impact

25
Q

thyrite would most likely be used with

A

valve type lightning arresters

26
Q

what is not an advantage of hvdc transmission lines

A

overall insolation requirement may be based on the peak rather than actual voltage

27
Q

the control area =

A

one or more systems operating with metering and control facilities on all its ties to other systems outside the control area

28
Q

the combine governor action and inertia of all generating units connected to a system is used to establish proper

A

frequency bias setting for that control area

29
Q

incremental loading mainly refers to

A

the economical generation of electrical energy

30
Q

the process where two systems not directly tied together may exchange electrically energy with each other through a third system to which they are mutually connected

A

wheel energy

31
Q

most plant plans give bearings in terms of

A

north, feet

32
Q

structural drawings show: framework, floors, and ____

A

foundations

33
Q

supervisory control systems differ mainly from other classes of control systems

A

in the manner in which commands are transmitted and received

34
Q

the reproduction at convenient location of measurement made at remote point is called

A

telemetering

35
Q

in comparing the merit of analog telemetering with those of digital telemetering it would be correct to say

A

undetectable errors can be introduced at all points in an analog but only at the send end of a digital system

36
Q

an intra plant telephone circuit when arranged so that either the transmitter or receiver can be switched from the circuit when not in use is called

A

push to talk arrangement

37
Q

carrier current=

A

a radio frequency signal that is modulated by another signal at audio frequency rate and thus carries the intelligence of the second signal

38
Q

a line trap =

A

parallel resonance circuit

39
Q

for an oxygen breathing apparatus complete respiratory protection is provided for a minimum of

A

45 minutes

40
Q

for co2 extinguishers the approx. duration of discharge is

A

20lbs 45 sec

41
Q

dry chemical extinguishers consist of a powder composed of

A

highly refined soda

42
Q

accidents with small hand tools such as wrenches that slip are

A

another major source of injuries

43
Q

direct current is electric current that flows

A

one direction

44
Q

how is ohm meter different from and ammeter and volt meter

A

it has its own power and axillary control circuit

45
Q

what powers the flay ball

A

pmg permeant magnet generator

46
Q

what controls and maintains the wicket gates as it opens to allow the generator to get up to main speed

A

gate limit device

47
Q

a watt meter reads

A

volt-current

48
Q

what is not Boolean algebra

A

notit