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WorksheetsElectrical CBT Part-3
Total questions: 59
Worksheet time: 5hrs 55mins
Name
Class
Date
1.
NETA MTS is a standard for ______________.
a)
A Maintenance
b)
B Manufacturing
c)
C Main Lines
d)
D Main Transformer
2.
Name the regulatory body in Saudi Arabia to enforce rules regarding power generation.
a)
A ECRA
b)
B SEC
c)
C ARAMCO
d)
D SMEC
3.
Using an analogue scale, the value of current often has to be ______________.
a)
A exact
b)
B estimated
c)
C both a and b
d)
D none of the above
4.
identify the value of the resistor as shown in the image.
a)
A 4.7 kilo-ohms, 5 percent
b)
B 470 ohms, 5 percent
c)
C 4.7 ohms, 5 percent
d)
D 4.7 mega-ohms, 5 percent
5.
Power Factor is?
a)
A A measure of the efficiency of an AC load
b)
B Measured in watts
c)
C The ratio of AC supply voltage to AC circuit current
d)
D Always greater than 1.0
6.
Which statement is TRUE?
a)
A Analogue multi-meter is easier to read than digital meters
b)
B Analogue multi-meters have auto-ranging voltage scales
c)
C Digital multi-meters are easier to read than analogue meters
d)
D Digital multi-meter displays must be set to zero before use.
7.
A plug-in thermocouple allows a multi-meter to measure.
a)
A Power in watts, W
b)
B Heat energy in joules, J
c)
C Temperature in degree C
d)
D Resistance of heating elements in ohms
8.
Which of the following type of test that checks if a circuit has a complete path for current to flow round it?
a)
A Insulation
b)
B Current
c)
C Continuity
d)
D Illumination
9.
What meter is used to check current of a motor?
a)
A Ammeter
b)
B Voltmeter
c)
C Insulation tester
d)
D Cable Locator
10.
What risk assessment term is used when an accident is over 80% likely to happen?
a)
A Possible
b)
B Probable
c)
C Improbable
d)
D Impossible
11.
Which tool should be used to fasten Allen Bolts to medium levels of torque?
a)
A Allen Keys
b)
B Ball-head Screwdrivers
c)
C Cross head screwdriver
d)
D Electrician's pliers
12.
An ID system that uses small radio frequency identification devices for identification and tracking purposes.
a)
A QR code
b)
B RFID
c)
C Bar code
d)
D Equipment ID
13.
What will happen to tools if left in wet conditions?
a)
A They will be OK
b)
B Nothing will happen
c)
C Safe storage
d)
D It will be corroded
14.
What label should you attach to a damage piece of test equipment?
a)
A Do Not Use
b)
B Calibrated
c)
C Certified
d)
D Barcode
15.
What can happen to equipment if the wrong power charger is used?
a)
A It will charge up quicker
b)
B It will charge up slower
c)
C It could damage the equipment
d)
D It will not charge
16.
What is the minimum number of teeth that should be in contact with a work piece when using a hacksaw?
a)
A 3
b)
B 10
c)
C 12
d)
D 18
17.
Which direction of hacksawing motion is the main cutting made?
a)
A Forward, away from the body
b)
B Backwards, towards the body
c)
C Downward away from the body
d)
D Upward towards the body
18.
Which type of pliers are most suitable to hold large irregular shaped objects?
a)
A Combination
b)
B Long Nose
c)
C Gland
d)
D Flat Nose
19.
Which type of connections require torqueing of their terminals
a)
A All terminals
b)
B Only power terminals
c)
C Those identified by manufactures
d)
D Only those over size 22 AWG
20.
What units is torque measured in
a)
A PSI
b)
B Newton meters
c)
C Kilo Amps
d)
D mm
21.
Bonding is essential with HV transmission lines and equipment. What is the purpose of bonding isolated HV cables before starting work?
a)
A To reduce earth fault loop impedance
b)
B To increase fault current
c)
C To create an equipotential zone
d)
D To decrease system phase voltage
22.
A radial grounding electrode system comprises of one or more radial grounding electrodes, vertical electrodes and a bonding conductor. What are radial grounding systems particularly well suited to prevent disturbance to?
a)
A HV transformers
b)
B DC generators
c)
C AC generators
d)
D Electronic systems
23.
Which type of connection is not permitted for joining lightning protection bonding conductors?
a)
A Soldering
b)
B Welding
c)
C Pressure connections
d)
D Clamps
24.
Fill the blank: Every OCS (Overhead Contact System) masts / pole / structure is connected to track return system / traction earth system by an insulated copper cable with a cross section of at least ______
a)
A 40 mm2
b)
B 50 mm2
c)
C 30 mm2
d)
D 60 mm2
25.
Cranes by design are commonly tall structures and therefore are subject to lightning strikes. This will normally require an additional earth connection of sufficient specification to dissipate any strike. What is the acceptable resistance value between the crane tower base and earth?
a)
A Less than 10 ohms
b)
B Greater than 10 ohms
c)
C Greater than 100 ohms
d)
D Less than 100 ohms
26.
What instrument do we use to measure the resistance of a cable?
a)
A Approved voltage indicator
b)
B Insulation resistance tester
c)
C Low resistance ohm-meter
d)
D Phase rotation meter
27.
What do the letters SPD stand for?
a)
A Surge Protection Device
b)
B Surge Panel Device
c)
C Solid Protective Device
d)
D Surge Protection Disconnection
28.
What is an example of an extreme transient voltage?
a)
A Converting DC to AC
b)
B Electronic circuitry
c)
C Switching on a light circuit
d)
D Lightning strike
29.
What is an example of an earth electrode?
a)
A Resistance rod
b)
B Driven rod
c)
C Copper shaft
d)
D Earth tab
30.
What are steel earthing rods normally coated with?
a)
A Copper
b)
B Grease
c)
C Tin
d)
D Zinc
31.
Exothermic welding is a process for permanently joining earthing (grounding) or lightning protection conductors together. What is exothermic welding also known as?
a)
A TIG welding
b)
B MAG welding
c)
C Thermite welding
d)
D Thermal welding
32.
What is another method of electrically bonding lengths of pipeline together apart from welding?
a)
A Gluing
b)
B Bolting
c)
C Wedging
d)
D Taping
33.
Which two factors determine the conductance of soil?
a)
A Particle size and age
b)
B Age and weight
c)
C Colour and weight
d)
D Moisture and content
34.
What can be done to reduce corrosion of earth electrodes in the ground?
a)
A Using dissimilar metals
b)
B Adding water
c)
C Soil conditioning
d)
D Increasing ground temperature
35.
What is defined as a location of increased risk of shock?
a)
A A room with more than two sockets
b)
B An outside space
c)
C A room containing a bath
d)
D A room protected by an RCD
36.
Sacrificial system is also called cathodic Protection. Where is the sacrificial anode in the electro-chemical series in comparison to the protected metal?
a)
A Higher
b)
B Lower
c)
C At the same level
d)
D It does not matter
37.
What is a disadvantage of using magnesium as an anode?
a)
A Poor mechanical property
b)
B Poor electrical properties
c)
C Hydrogen embrittlement
d)
D Electrode potential too weak
38.
What is the most common method to attach an anode lead to the protected metal?
a)
A Glue
b)
B Nut and Bolt
c)
C Sealant
d)
D Thermite weld
39.
Which sacrificial system is generally used to protect underground storage tanks?
a)
A Bolted-on zinc anodes
b)
B Magnesium anodes with lead wires
c)
C Aluminium cast-in straps
d)
D Strips of silver added to the steel structure
40.
What is the difference between sacrificial cathodic protection and ICCP?
a)
A ICCP uses sacrificial anodes with no DC power connected
b)
B Sacrificial systems only work in sea water
c)
C ICCP has a DC power supply connected
d)
D Sacrificial systems rely on the sun for their power
41.
What will minimize the risk of crevice corrosion?
a)
A Immersion in water
b)
B Removing surface finishes
c)
C Routine maintenance
d)
D Operation under vibration
42.
Which main term defines the selective removal of metal by corrosion in small areas?
a)
A Localized corrosion
b)
B General corrosion
c)
C Crevice corrosion
d)
D Pitting corrosion
43.
Microbial corrosion (sometimes called microbiologically-influenced corrosion or MIC) is corrosion that is caused by the presence and activities of microorganisms. What type of water is most associated with MIC?
a)
A Distilled
b)
B Stagnant
c)
C Fast flowing
d)
D De-ionized
44.
What can reduce the effects of particulate erosion in a flow process?
a)
A Thinner pipe
b)
B Tighter bends
c)
C Reduced flow rate
d)
D Increased flow rate
45.
What terminal is the cathode in the electroplating process?
a)
A positive
b)
B neutral
c)
C negative
d)
D passive
46.
What is galvanic corrosion also called?
a)
A electrolysis
b)
B bimetallic corrosion
c)
C plating
d)
D layering
47.
What does the cladding process sometimes use?
a)
A Laser
b)
B Cryogenic medium
c)
C Organic solvent
d)
D Ultrasonic bath
48.
Which element has the highest potential?
a)
A Sodium
b)
B Zinc
c)
C Aluminium
d)
D Calcium
49.
What is the effect of increased ions in an electrolyte?
a)
A Lower conductivity
b)
B Higher conductivity
c)
C Lower power
d)
D Higher power
50.
What is the main reaction when ferrous metals corrode?
a)
A Ionization
b)
B Electrification
c)
C Oxidization
d)
D Desiccation
51.
What is a dedicated computer?
a)
A Task specific computer
b)
B Desktop computer
c)
C Laptop computer
d)
D Mainframe computer
52.
What is an example of working document?
a)
A Fire alarm manual
b)
B Specification
c)
C ITPP
d)
D Test report
53.
What drawing shows power outlets?
a)
A Floor plan
b)
B Site plan
c)
C Power riser
d)
D Sectional drawing
54.
What document can be used as part of the quality assurance approach?
a)
A Design inspection checklist
b)
B Bill of quantity
c)
C Construction drawings
d)
D Floor plans
55.
How many clauses are there in ISO 9001?
a)
A 10
b)
B 15
c)
C 20
d)
D 100
56.
What standard gives requirements for explosive environment?
a)
A IEC 60079
b)
B IEC 61577
c)
C IEC 65345
d)
D IEC 14001
57.
What describes best the person or business that supplies products or services to your business?
a)
A Vendor
b)
B Purchaser
c)
C Seller
d)
D Contractor
58.
What is best document to explain the supplier about what you need?
a)
A Specification sheet
b)
B ITP
c)
C Dispatch note
d)
D Delivery note
59.
What describes the process approach best?
a)
A Plan Do Check Action
b)
B Cost cutting
c)
C HR training
d)
D Time keeping
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