Question 1

An example of conditional guard interlock is a switch contact plus a dead -bolt for the guard gate.

Accepted Answer

A) True 
 B)False

Question 2

The exhaust port of a solenoid valve returns fluid accumulated in the cylinder back to the fluid supply.

Accepted Answer

A) True 
 B)False

Question 3

Specific gravity is the ratio of the density of the item to the density of air.

Accepted Answer

A) True 
 B)False

Question 4

A solenoid valve is an electromechanical device that can control the flow of an inert gas.

Accepted Answer

A) True 
 B)False

Question 5

_________is the first line of defense for protecting people from hazards

Accepted Answer

A)  Physical barriers 
B)  Presence sensing devices 
C)  Safety control units 
D)  E -stop devices 
E)  Interlock devices

Question 6

Match the advantage or disadvantage to the mechanical interlock.
-Easy installation

Accepted Answer

A)  Cam-operated interlock 
B)  Bar-operated interlock 
C)  Tongue-operated interlock 
D)  Hinge-operated interloc

Question 7

A three -terminal RTD mitigates the errors caused by lead wire resistance and noise.

Accepted Answer

A) True 
 B)False

Question 8

Fluids with higher viscosity flow more easily than those with a lower viscosity.

Accepted Answer

A) True 
 B)False

Question 9

OSHA sets safety standards to save lives, prevent injuries in the work place and protect the health of the American worker.

Accepted Answer

A) True 
 B)False

Question 10

Match the flow sensor with its classification.
-Orifice plate

Accepted Answer

A)  Differential flow sensor 
B)  Velocity flow senso

Question 11

Match the advantage to its temperature sensor.
-Most linear

Accepted Answer

A)  Thermistor 
B)  Thermocouple 
C)  IC temperature sensor 
D)  RTD

Question 12

In a light curtain, an emitter sends an array of synchronous serial infrared light beams to a receiver.

Accepted Answer

A) True 
 B)False

Question 13

The electrical representation of a presence sensing mat is a normally open switch.

Accepted Answer

A) True 
 B)False

Question 14

Op amp integrators provide a ramp function as the input to the proportional control valve.

Accepted Answer

A) True 
 B)False

Question 15

Match the device to its function.
-Signal Conditioner

Accepted Answer

A)  A device that resizes a signal to meet the requirements of another device 
B)  A device that converts one level of signal to another level 
C)  A device that converts small signals to larger signals 
D)  A device that receives one type of energy and concerts it to another typ

Question 16

Match the advantage to its temperature sensor.
-Fast reaction to temperature change

Accepted Answer

A)  Thermistor 
B)  Thermocouple 
C)  IC temperature sensor 
D)  RTD

Question 17

Besides a temperature sensor, the thermistor is used as a level sensor.

Accepted Answer

A) True 
 B)False

Question 18

Match the advantage to its temperature sensor.
-Very accurate

Accepted Answer

A)  Thermistor 
B)  Thermocouple 
C)  IC temperature sensor 
D)  RTD

Question 19

Match the valve type to the application
-Control the liquid through large -diameter pipes

Accepted Answer

A)  Proportional control valve 
B)  Pneumatic-assisted control value 
C)  Motor driven control valu

Question 20

Match the flow sensor with its classification.
-Pitot tubes

Accepted Answer

A)  Differential flow sensor 
B)  Velocity flow senso

Exam 4: Analog Processes Control Devices, Sensors and Safety

An example of conditional guard interlock is a switch contact plus a dead -bolt for the guard gate.

The exhaust port of a solenoid valve returns fluid accumulated in the cylinder back to the fluid supply.

Specific gravity is the ratio of the density of the item to the density of air.

A solenoid valve is an electromechanical device that can control the flow of an inert gas.

_________is the first line of defense for protecting people from hazards

Match the advantage or disadvantage to the mechanical interlock. -Easy installation

A three -terminal RTD mitigates the errors caused by lead wire resistance and noise.

Fluids with higher viscosity flow more easily than those with a lower viscosity.

OSHA sets safety standards to save lives, prevent injuries in the work place and protect the health of the American worker.

Match the flow sensor with its classification. -Orifice plate

Match the advantage to its temperature sensor. -Most linear

In a light curtain, an emitter sends an array of synchronous serial infrared light beams to a receiver.

The electrical representation of a presence sensing mat is a normally open switch.

Op amp integrators provide a ramp function as the input to the proportional control valve.

Match the device to its function. -Signal Conditioner

Match the advantage to its temperature sensor. -Fast reaction to temperature change

Besides a temperature sensor, the thermistor is used as a level sensor.

Match the advantage to its temperature sensor. -Very accurate

Match the valve type to the application -Control the liquid through large -diameter pipes

Match the flow sensor with its classification. -Pitot tubes