Three wire system Study guides, Class notes & Summaries
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OCR 2023 GCE Physics A H156/01: Breadth in physics AS Level Question Paper & Mark Scheme (Merged)
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2 
© OCR 2023 
Section A 
You should spend a maximum of 25 minutes on this section. 
Write your answer to each question in the box provided. 
1 What is a typical value, in cm, for the wavelength of microwave radiation? 
A 0.0003 
B 0.03 
C 3 
D 300 
Your answer [1] 
2 The diagrams show four systems of forces with three forces acting at a single point. The forces 
are in the same plane. The diagrams are drawn to scale. 
Which system could be in equilibrium? 
A 
B 
C 
D 
Your answer [1] 
3 
© O...
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MSSC MAINTENANCE AWARENESS WITH 100% CORRECT ANSWERS.
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When connecting a 3-phase motor the three lines (T1,T2 and T3) are usually connected to __________. 
- L1, L2, and L3 
 
 
 
Electricians use __________ to prevent damage to electrical wiring running to the machine. 
- rigid and flexible conduit 
 
 
 
When the wire or foil strip inside a fuse melts, the fuse is said to be __________. 
- blown 
 
 
 
The difference between a fuse and a circuit breaker is __________. 
- circuit breakers can be reset and used again 
 
 
 
The amount two electrical...
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COSC 325 – Final | Exam Questions With Verified Correct Answers| Latest Update
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COSC 325 – Final | Exam Questions 
With Verified Correct Answers| 
Latest Update 
Conductor - ANSWER material that has very little resistance and 
permits electrons to move through it easily 
Insulator - ANSWER any material that has a very high resistance 
and resists the flow of electrons 
Generated electricity - ANSWER the alternating current (AC) 
created by power plant generator 
Three phase - ANSWER three distinct wave cycles, 3-wires, 
415V 
Single phase - ANSWER power supply has o...
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Michigan Journeyman test Questions With Complete Solutions
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There are six conductors in a race way connected to 75° C rated circuit breaker. Each wire has a 70 amp load using THHM conductors. The minimum size conductors used our #_________AWG correct answer: 4 
 
Thermal insulation shall not be installed within _________inches of recessed lighting fixtures correct answer: 3 
 
A 1 inch conduit contains three wire circuits or a phase system. All conductors are number 10 TW. Each circuit consist of two phase conductors and one grounding conductor and on...
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Fire Investigator - Master For TCFP Test Questions and Answers (Test Bank) Complete Solution 100% Verified
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Fire Investigator - Master For TCFP Test Questions and Answers (Test Bank) Complete Solution 100% Verified 
Is NFPA 921 a guide or a standard? 
It is the Guide for Fire and Explosion Investigations 
What are the six steps of the scientific method? 
Recognize the need 
Define the problem 
Collect the data 
Analyze the data 
Develop a hypothesis 
Test the hypothesis 
What step of the scientific method is inductive reasoning? 
Analyze the data 
What step of the scientific method is deductive reason...
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S-95 FDNY TEST STUDY GUIDE QUESTIONS AND ANSWERS 100% PASS
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S-95 FDNY TEST STUDY GUIDE 
 
QUESTIONS AND ANSWERS 100% PASS 
 
What Can A S95 Holder do? Only visual inspections on smoke alarms 
 
Primary Purpose of Fire Alarm Systems on a premise is to warn tenants and transmit signals 
indicating a fire condition to the FDNY aka Central station 
 
Fire Alarm Control Panel (FACP) Monitors inputs and controls output through various types 
of circuits.The Panel activates the building audible and visual device connected to the fire alarm 
(horn/strobes) 
 
Th...
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Detailed Answer Key 2024, ATI Oyxgenation Practice with 100Verified Questions and Answers.
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Detailed Answer Key 2024, ATI Oyxgenation Practice with 100Verified Questions and Answers. 
1. A nurse is conducting a primary survey of a client who has sustained life-threatening injuries due to a motor-vehicle 
crash. Identify the sequence of actions the nurse should take. (Move the actions into the box on the right, placing 
them in the selected order of performance. Use all the steps.) 
C. Open the airway using a jaw-thrust maneuver. 
D. Determine effectiveness of ventilator efforts. 
B. Es...
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Michigan Journeyman Test | 2023 | 75 Questions with 100% Correct Answers | Updated & Verified
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There are six conductors in a race way connected to 75° C rated circuit breaker. Each wire has a 
70 amp load using THHM conductors. The minimum size conductors used our 
#_________AWG - 4 
Thermal insulation shall not be installed within _________inches of recessed lighting fixtures - 
3 
A 1 inch conduit contains three wire circuits or a phase system. All conductors are number 10 
TW. Each circuit consist of two phase conductors and one grounding conductor and one 
equipment grounding conduct...
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Stationary Engineer Electric| 359 questions| with complete solutions
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An AC circuit consists only of a pure inductance and a power source. The relationship between the voltage and the current in this circuit is that the correct answer: current lags the voltage 
 
The power factor of a load is equal to the ____________ power divided by the ____________ power. correct answer: True ; apparent 
 
A 10-ohms and 20-ohms resistor are connected in parallel. The total line current drawn by this parallel combination is 30 amps. Under these conditions, the line voltage wil...
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ASE G1 Test Questions & Answers | 55 Questions with 100% Correct Answers | Verified | Updated 2023
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Technician A says that when pressure testing a radiator cap, a special adapter is needed. 
Technician B says the best way to check thermostat operation is while it is in the engine. Who is 
right? - Tech A 
A technician is checking resistance in an engine's spark plug wires using an ohmmeter. A general 
rule is to replace a wire if resistance is over: - 30,000 ohms 
Technician A says that in an ignition system, the voltage supplied to the coil during starting is 
battery voltage. Technician B s...
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