lesson 2: tools and electrical instruments

Question 1

This electrical test instrument measures the amount of current in an electrical circuit

Answer 1

Ammeter

Question 2

a hand conduit bender can bend conduit sizes from 1/2” to ___”?

Answer 2

2 inches

Question 3

side cutting pliers are also known as what

Answer 3

linemans pliers

Question 4

basic digital multimeters measure voltage, current and what else

Answer 4

resistance

Question 5

insulated hand tools are rated for a maximum use of up to how many volts

Answer 5

1,000 v

Question 6

rubber insulated gloves and eye protection must be worn when working with any kind of live circuit that is ___v or more

Answer 6

50v

Question 7

battery powered cable cutters can cut aluminum and soft ___ up to 2” in diameter

Answer 7

copper

Question 8

what type of drill rotates and drives simultaneously

Answer 8

hammer drill

Question 9

in line current measurements must be limited to circuits known to have currents less than how many amps

Answer 9

10 amps

Question 10

what type of measurements are measured in kilohms and megaohms

Answer 10

resistance

Question 11

a laser distance meter used what type of emitter/sensor to take measurements

Answer 11

ultrasonic

Question 12

what type of measurement does a megohmeter take in order to measure the resulting current, which indicates the circuit resistance

Answer 12

voltage

Question 13

what type of vise is used to be temporarily mounted so light duty work can be done without having to drill any holes

Answer 13

chain vise

Question 14

what happens when insulators are damaged by moisture or overheating

Answer 14

resistance decreases

Question 15

what kind of readings are affected by surface material and its condition such as being painted, dirty, or insulated

Answer 15

temperature readings

Question 16

this type of test instrument measures current in a circuit by measuring the strength of the magnetic field around a single conductor

Answer 16

clamp on ammeter

Question 17

this type of screwdriver is used to hold screws in place when working in tight spaces

Answer 17

screw starting screwdriver

Question 18

this type of ohmmeter measures very high resistances of insulating components

Answer 18

megohmeter

Question 19

this kind of measurement must be taken when the circuit is de-energized

Answer 19

resistance

Question 20

what type of electrical test instrument can measure more than one electrical property

Answer 20

digital multi meter (DMM)

Question 21

the presents of a complete path for current to flow is called what

Answer 21

continuity

Question 22

what measurement may indicate the condition of a circuit or component

Answer 22

resistance

Question 23

this tool is used to finish or size an existing hole

Answer 23

hand reamer

Question 24

the two main types of screwdrivers are flathead and what else

Answer 24

philips

Question 25

what kind of hammer is used to strike chisels and punches

Answer 25

ball peen hammer

Question 26

T or F
a capacitor must be discharged before any resistance readings of a circuit can be taken

Answer 26

True

Question 27

T or F
a DMM emits an audible beep for high resistance, indicating continuity

Answer 27

False
the audible beep is emitted when there is little to no resistance when it indicates continuity

ex. when checking a new or used fuse both leads are put on each end, if the fuse is good the audible beep will sound. if it is blown, the beep will not sound

aka is the path of resistance continuous or not

Question 28

T or F
insulation used on conductors in branch circuits is usually thin to save weight and space

Answer 28

False
some insulation used in branch circuits, is thick and difficult to damage or does not easily break down

This statement would be true if it were talking about motor winding insulators

Question 29

what are the 9 functions of a digital multimeter

Answer 29

1. digital display
2. function switch
3. measure AC current
4. measure DC current
5. capacitance
6. measure AC voltage
7. measure DC voltage
8. resistance
   9.temperature

keep in mind some DMM may differ from one to the next