I LEVEL 3 Certification PAPER
Questions
and Answers Verified Solutions Latest
Update
Question:
d. parallel ports.
Answer:
b. microprocessor circuitry. The difference between the squirrel-cage rotor and the
wound rotor is in: a. their pole-phase groups. b. how the conductors are connected. c.
how the current is induced in the conductors. d. all of the above. b. how the conductors
are connected. The frame, the core, the winding, and the end plates are all parts of
the: a. rotor. b. stator. c. alternator. d. induction motor. b. stator. Which of the
following is a sign of overheating rotor bars? a. Reduced starting torque. b. Noise. c.
Discoloration. d. All of the above. Answer: c. Discoloration. Two sources of power, one
AC and one DC, are required for running a(n): a. induction motor. b. squirrel-cage
motor. c. synchronous motor. d. wound-rotor motor. Answer: c. synchronous motor.
Modern synchronous motors have: a. both brushes and slip rings. b. brushes, but no
slip rings. c. slip rings, but no brushes. d. neither brushes nor slip rings. Answer: d.
neither brushes nor slip rings. All the following are true of 240-volt systems compared
to 480- volt systems, except: a. they cost more to operate. b. they require more
current per unit of power. c. they require smaller circuit breakers. d. they are safer.
Answer: c. they require smaller circuit breakers. If a charged capacitor is removed
from a circuit, the capacitor: a. retains its charge. b. loses some of its charge. c. loses
most of its charge. d. loses all of its charge. Answer: a. retains its charge. Control
systems are usually designed so that each individual circuit controls: a. all functions of
the machine. b. at least two functions. c. only one function. d. only one device. Answer:
c. only one function. A 115-volt, 2-KVA, single-phase generator operating at full load
will deliver how many amperes? a. 0.23 b. 17.4 c. 57.5 d. 230. Answer: b. 17.4 What
is the current when a circuit has a 1,500- watt load and a power factor of 86%, and
operates from a three-phase 230-volt source? a. 9.7 amps b. 6.5 amps c. 4.4 amps d.
3.8 amps. Answer: c. 4.4 amps What is the amp-load of a three-phase, 0.5-hp,
230-volt motor with an efficiency rating of 92% and a power factor of 80%? a. 1.27
amps b. 1.19 amps c. 2.55 amps c. 4.41 amps. Answer: a. 1.27 amps A three-phase,
460-volt motor draws a current of 52 amperes. The motor has an efficiency rating of
94% and a power factor of 80%. What is the horsepower? a. 24.1 hp b. 41.7 hp c. 50.0
hp d. 73.8 hp. Answer: b. 41.7 hp A 120-volt AC circuit draws a current of 5 amperes.
Determine the power consumption. a. 60 watts b. 120 watts c. 4.8 watts d. 600 watts.
, Answer: d. 600 watts In a simple ratio system, the independent variable is: a. both
measured and controlled. b. controlled but not measured. c. measured but not
controlled. d. neither measured nor controlled. Answer: c. measured but not controlled.
The root-mean-square method is used to calculate: a. integral and derivative action.
b. proportional band or gain. c. system accuracy. d. transducer bias. Answer: c. system
accuracy. To simulate an RTD input, you use a: a. digital VOM. b. potentiometer. c.
resistance decade box. d. wally box. Answer: c. resistance decade box. SCADA
systems typically span: a. an entire plant. b. many miles. c. part of the plant. d. up to
5,000 feet. Answer: b. many miles. In the ISA tag PIC-21, the P stands for: a. Positive.
b. Pressure. c. Process. d. Proportional. Answer: b. Pressure. The outputs of a digital
transducer are in the form of: a. 1 to 5 mv. b. 4 to 20 ma. c. digital computer words. d.
on or off signals. Answer: c. digital computer words. A shield around the signal lead is
the most effective protection against: a. impedance. b. unwanted conductance. c.
noise. d. inverted sources. Answer: c. noise. The most important consideration in loop
control is: a. accessibility. b. accuracy. c. cost. d. response. Answer: d. response.
Which element makes a programmable logic controller system flexible? a. Memory. b.
I/O. c. Program. d. Power supply. Answer: c. Program. Local I/O expansion involves
the addition of: a. a second processor. b. a shift register. c. data-handling capabilities.
d. I/O points within the rack. Answer: d. I/O points within the rack. A major cause of
problems in multi-layer printed circuit boards is: a. age. b. corrosion. c. interlayer
separation. d. overheating. Answer: c. interlayer separation. A software problem that
causes incorrect results is called a: a. bug. b. crash. c. glitch. d. spike. Answer: a. bug.
The CPU of a microcomputer is a(n): a. ALU. b. microcontroller. c. microprocessor. d.
printed circuit assembly. Answer: c. microprocessor. Where is a computer's start-up
program usually stored? a. In RAM b. In ROM c. On disk d. On magnetic tape. Answer: b.
In ROM How many signal conditions can digital I/O devices have? a. One b. Two c.
Eight d. An infinite number. Answer: b. Two A CDU (Command and Display Unit)
computer screen that senses finger pressure is: a. a digitizer. b. an intelligent terminal.
c. a scanner. d. a touch screen. Answer: d. a touch screen. Which of the following is
not a goal of a microprocessor-based engine control system? a. Better engine
performance b. Better fuel economy c. Lower exhaust emissions. d. Lower noise
emissions. Answer: d. Lower noise emissions The RS232C standard applies to what
type of digital data transmission? a. Balanced b. Fiber optic c. Parallel d. Serial. Answer:
d. Serial 10°C is equal to how many degrees Fahrenheit? a. 23.3°F b. 50°F c. 75.6°F
d. - 47.6°F. Answer: b. 50°F What is the volume of a cylinder with a 40-foot diameter
and height of 23 feet? a. 1,444 cu ft b. 7,222 cu ft c. 28,888 cu ft d. 33,221 cu ft.
Answer: c. 28,888 cu ft One gallon of water weighs 8.34 pounds and one cubic foot
contains 7.48 gallons of water. A fish tank measures 36 inches long, 24 inches wide
and 20 inches high. How many pounds of water will be in the fish tank? a. 64.4 lbs b.
74.8 lbs c. 83.4 lbs d. 624 lbs. Answer: d. 624 lbs To select the proper protection for a
motor, you need to know all the following except the: a. ambient temperature. b.
full-load current rating. c. service factor. d. time rating. Answer: a. ambient
temperature. An on-off switch with overload relays is called a: a. magnetic control. b.
manual starter. c. reversing starter. d. combination starter. Answer: b. manual starter.
Questions
and Answers Verified Solutions Latest
Update
Question:
d. parallel ports.
Answer:
b. microprocessor circuitry. The difference between the squirrel-cage rotor and the
wound rotor is in: a. their pole-phase groups. b. how the conductors are connected. c.
how the current is induced in the conductors. d. all of the above. b. how the conductors
are connected. The frame, the core, the winding, and the end plates are all parts of
the: a. rotor. b. stator. c. alternator. d. induction motor. b. stator. Which of the
following is a sign of overheating rotor bars? a. Reduced starting torque. b. Noise. c.
Discoloration. d. All of the above. Answer: c. Discoloration. Two sources of power, one
AC and one DC, are required for running a(n): a. induction motor. b. squirrel-cage
motor. c. synchronous motor. d. wound-rotor motor. Answer: c. synchronous motor.
Modern synchronous motors have: a. both brushes and slip rings. b. brushes, but no
slip rings. c. slip rings, but no brushes. d. neither brushes nor slip rings. Answer: d.
neither brushes nor slip rings. All the following are true of 240-volt systems compared
to 480- volt systems, except: a. they cost more to operate. b. they require more
current per unit of power. c. they require smaller circuit breakers. d. they are safer.
Answer: c. they require smaller circuit breakers. If a charged capacitor is removed
from a circuit, the capacitor: a. retains its charge. b. loses some of its charge. c. loses
most of its charge. d. loses all of its charge. Answer: a. retains its charge. Control
systems are usually designed so that each individual circuit controls: a. all functions of
the machine. b. at least two functions. c. only one function. d. only one device. Answer:
c. only one function. A 115-volt, 2-KVA, single-phase generator operating at full load
will deliver how many amperes? a. 0.23 b. 17.4 c. 57.5 d. 230. Answer: b. 17.4 What
is the current when a circuit has a 1,500- watt load and a power factor of 86%, and
operates from a three-phase 230-volt source? a. 9.7 amps b. 6.5 amps c. 4.4 amps d.
3.8 amps. Answer: c. 4.4 amps What is the amp-load of a three-phase, 0.5-hp,
230-volt motor with an efficiency rating of 92% and a power factor of 80%? a. 1.27
amps b. 1.19 amps c. 2.55 amps c. 4.41 amps. Answer: a. 1.27 amps A three-phase,
460-volt motor draws a current of 52 amperes. The motor has an efficiency rating of
94% and a power factor of 80%. What is the horsepower? a. 24.1 hp b. 41.7 hp c. 50.0
hp d. 73.8 hp. Answer: b. 41.7 hp A 120-volt AC circuit draws a current of 5 amperes.
Determine the power consumption. a. 60 watts b. 120 watts c. 4.8 watts d. 600 watts.
, Answer: d. 600 watts In a simple ratio system, the independent variable is: a. both
measured and controlled. b. controlled but not measured. c. measured but not
controlled. d. neither measured nor controlled. Answer: c. measured but not controlled.
The root-mean-square method is used to calculate: a. integral and derivative action.
b. proportional band or gain. c. system accuracy. d. transducer bias. Answer: c. system
accuracy. To simulate an RTD input, you use a: a. digital VOM. b. potentiometer. c.
resistance decade box. d. wally box. Answer: c. resistance decade box. SCADA
systems typically span: a. an entire plant. b. many miles. c. part of the plant. d. up to
5,000 feet. Answer: b. many miles. In the ISA tag PIC-21, the P stands for: a. Positive.
b. Pressure. c. Process. d. Proportional. Answer: b. Pressure. The outputs of a digital
transducer are in the form of: a. 1 to 5 mv. b. 4 to 20 ma. c. digital computer words. d.
on or off signals. Answer: c. digital computer words. A shield around the signal lead is
the most effective protection against: a. impedance. b. unwanted conductance. c.
noise. d. inverted sources. Answer: c. noise. The most important consideration in loop
control is: a. accessibility. b. accuracy. c. cost. d. response. Answer: d. response.
Which element makes a programmable logic controller system flexible? a. Memory. b.
I/O. c. Program. d. Power supply. Answer: c. Program. Local I/O expansion involves
the addition of: a. a second processor. b. a shift register. c. data-handling capabilities.
d. I/O points within the rack. Answer: d. I/O points within the rack. A major cause of
problems in multi-layer printed circuit boards is: a. age. b. corrosion. c. interlayer
separation. d. overheating. Answer: c. interlayer separation. A software problem that
causes incorrect results is called a: a. bug. b. crash. c. glitch. d. spike. Answer: a. bug.
The CPU of a microcomputer is a(n): a. ALU. b. microcontroller. c. microprocessor. d.
printed circuit assembly. Answer: c. microprocessor. Where is a computer's start-up
program usually stored? a. In RAM b. In ROM c. On disk d. On magnetic tape. Answer: b.
In ROM How many signal conditions can digital I/O devices have? a. One b. Two c.
Eight d. An infinite number. Answer: b. Two A CDU (Command and Display Unit)
computer screen that senses finger pressure is: a. a digitizer. b. an intelligent terminal.
c. a scanner. d. a touch screen. Answer: d. a touch screen. Which of the following is
not a goal of a microprocessor-based engine control system? a. Better engine
performance b. Better fuel economy c. Lower exhaust emissions. d. Lower noise
emissions. Answer: d. Lower noise emissions The RS232C standard applies to what
type of digital data transmission? a. Balanced b. Fiber optic c. Parallel d. Serial. Answer:
d. Serial 10°C is equal to how many degrees Fahrenheit? a. 23.3°F b. 50°F c. 75.6°F
d. - 47.6°F. Answer: b. 50°F What is the volume of a cylinder with a 40-foot diameter
and height of 23 feet? a. 1,444 cu ft b. 7,222 cu ft c. 28,888 cu ft d. 33,221 cu ft.
Answer: c. 28,888 cu ft One gallon of water weighs 8.34 pounds and one cubic foot
contains 7.48 gallons of water. A fish tank measures 36 inches long, 24 inches wide
and 20 inches high. How many pounds of water will be in the fish tank? a. 64.4 lbs b.
74.8 lbs c. 83.4 lbs d. 624 lbs. Answer: d. 624 lbs To select the proper protection for a
motor, you need to know all the following except the: a. ambient temperature. b.
full-load current rating. c. service factor. d. time rating. Answer: a. ambient
temperature. An on-off switch with overload relays is called a: a. magnetic control. b.
manual starter. c. reversing starter. d. combination starter. Answer: b. manual starter.
