Big boi
A 3-phase, 15 HP, 230/460-volt motor has a nameplate FLA=38/19. This motor will actually draw ___ amps of line current if operated at 230 volts A- 38 B- 42 C- 21 D- 19 W- 32.9
38
The ampacity of UF cable shall be that of _____ degree C conductors A- 60 B- 85 C- 75 D- 90
60
The nameplate for a 15 HP, three-phase motor shows an FLA of 35 amps at 230 volts. What is the minimum size SOO cord is required to connect the motor branch circuit? A- 10 B- 8 c- 4 D- 6 E- 12
8
The primary reason to use other than a full-voltage starting method is to ______. A- Reduce starting current B- Control a motor's speed C- Start difficult loads
A
You are to surface mount EMT on a wall between two boxes as shown in Figure 208.45. You have to saddle over the obstacles shown. At most you could make____ degree saddles for the "Quickest" bends. Remember: the NEC limits the number of bend s in a conduit run. 1, 30 2, 45 3,60 A- 1 or 2 or 3 B- 1 only C- 1 or 2 only D- None of these
A
A line on a ladder diagram represents a wire. A- True B- False
A- True
A 3 ho, 240-volt, 10 motor has FLA=14 on its nameplate. The power factor is about 91%. The efficiency of this motor is about ______% A- 73.2 B- 52.9 C- 42.3 D- 60.6 E- 30.6 F- 66.6
A-73.2%
A conductor used to connect equipment or the grounded circuit of a wiring system to a grounding electrode or electrodes us defined as a _____. A- Main bonding Jumper B- Grounding electrode conductor C- Neutral conductor D- Grounded conductor
B
If a conveyor belt is to be started from either end of the line, the two start push-button switches in the control circuit will be connected in ____. A- Series B- Parallel
B
If the contacts of a mechanically held lighting conductor are closed, the contacts will ______. A- Open when a power failure occurs and close when it is restored B- Remain closed during a power failure and after it is restored
B
Normally, AC power in the United States operates at ____ cps (cycles per second) A- 100 B- 60 C- 50 D- 120
B
What is the minimum size THHN/THWN wire permitted to serve a load that will draw 47 amps? The load will operate for about 5 hours at a time. The branch-Circuit OCPD is a circuit breaker that is rated for 75 degrees c. A- 10 AWG B- 8 AWG C- 6 AWG D- 4 AWG E- None of these
B
When a grounding electrode conductor is installed inside a ferrous metallic raceway for physical protection, Section 250.64(E) ______ that conductor be bonded to the raceway. A- Does not require B- Requires
B
Refer to number 26 on the packet
Bruh Math
How many 14 AWG THW conductors are permitted in a 3 x 2 x 2 1/2 device box? A- 5 B- 7 C- 6 D- 9 E- 8
C
What size copper equipment grounding conductor is required for a circuit having a 40-ampere overcurrent device? A- 6 B- 8 C- 10 D- 14 E- 12
C
When a 3-0 motor is running and then "single-phases", _______. A- The winding burn up immediately B- The motor now becomes a single-phase motor and will operate indefinitely C- The motor continues to run for a while before the winding overheat D- The circuit breaker or fuse opens immediately
C
When a disconnecting means must be located within sight from a motor controller, the disconnect must be visible and more than ______ feet from one controller. A- 75 B- 100 C- 50 D- 25 E- 10
C
_____ Sensors detect the presence of an object by means of an electronic sensing field. A- Photoelectric B- Ultrasonic C- Proximity D- None of these
C
A melting alloy overload is in a magnetic motor starter____. A- Actuates when excessive control circuit current is presented and opens the control circuit to de-energize the coil B- Actuates when excessive motor circuit is present and opens only the affected motor circuit power contacts on the starter
D
Listed or labeled equipment shall be installed and used in accordance with______. A- The job specifications B- The instructions given by the authority having jurisdiction C- The plans D- The instructions included in the listing or labeling
D
The "hot" conductors, neutral conductors, switch legs, travelers, and equipment grounding conductors of a branch circuit are installed to gather in the same conduit in or order to avoid _______. A- inductive reactance B- Potential differences C- Induction heating D- All of the above
D
The direction of rotation of a 3-phase motor can be reversed by swapping _____ on the load side of the disconnection means. A- L1 and L3 B- L2 and L3 C- L1 and L2 D- Any of these
D
Type MC cable shall be supported and secured at intervals not exceeding ______. A- 3 ft B- 1.8 ft C- 4 1/2 ft D- 6 ft
D
A combination starter consists of a ______ 1, Safety Switch 2, Twist-Lock receptacle 3, Motor starter A- 1 only B- 3 only C- 1, 2, and 3 D- 2 and 3 only E- 1 and 3 only
E
What is the minimum size branch-circuit conductors are permitted to serve a load that is connected with THHN/THWN wire? The branch-circuit breaker that is rated for 75 degrees C. The connected load is NOT continuous and will drawn 22 amps. A- 8 AWG B- 4 AWG C- 10 AWG D- 6 AWG E- None of these
E
The connection between the grounded circuit conductor and the equipment grounding conductors at the main service is the Code definition of equipment grounding conductor. A- True B- False
False
Where used in a control circuit, float switch terminals are connected to the ___ terminals on a PLC A- Output B- Input
Input
Refer to 30
More math
A branch circuit supplies power to a 2 hp, 115/230-V, 10 motor from a 1-pole breaker i a 120/208-V, 3-ph 4-W panel. One time fuses for this circuit would have a maximum permitted rating of _____ A. A- 50 B- 70 C- 45 D- 40 E- None of these
None of these
Contacts that are spring-held in an open position, or state, are referred to as normally____. A- Closed B- Open
Open
Where used in a control circuit, stater coils are connected to the _____ terminals on a PLC. A- Input B- Output
Output
Sensors detect the presence of an object by utilizing a beam of light. A- Ultrasonic B- Proximity C- Photoelectric D- None of these
Photoelectric
When a 30, 4-W supply system delivers 120/240 volts the system is ____ connected . A- Wye B- Delta
Wye
When a 30, 4-W supply system delivers system delivers 120/208 volts, the system is ___ connected. A- Wye B- Delta
Wye
