Resistors - Study guides, Revision notes & Summaries

Which of the following is true regarding a series circuit? - correct answerThe current flow is the same through all resistors. Which of the following is true regarding a parallel circuit? - correct answerIt has more than one path for current to flow. Which of the following is true regarding a series-parallel circuit? - correct answerIf a circuit is reduced to an equivalent series circuit, the total resistance is found by adding the loads. Two branches of a circuit (R1 and R2) across a 1...

Conductors connected to the high leg of a four-wire delta system be color-coed with what color of insulation or tape? -correct answer -Orange (NEC Section 110.15) Dry-type transformers rated at 112.5kVA or less may be located out in the open provided they are separated from combustible material by a distance of ____. -correct answer -12" If the power factor is improved by the addition of a capacitor, the motor running overcurrent device must be selected based on the ___. -correct answer -...

Resistors/ The LDR and the thermistor Exam Questions and Answers 2024( A+ GRADED 100% VERIFIED).

If two 10-ohm resistors are connected in series, what is the total resistance of these resistors? - ANSWER20 ohms In a split-phase motor, how much greater is the starting current when compared to the full-load current? - ANSWER6 to 8 times The terminals of a motor can be identified using a battery and a ___ - ANSWERvoltmeter A 5-ohm and a 20-ohm resistor are connected in parallel. What is the total resistance of these two resistors? - ANSWER4 ohms The normal location to provide overcurrent p...

A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12" sheave. What sheave is required? - CORRECT ANS Diam=12" 12/4=3" 25fpm=3" 100fpm + 25fpm= 12"+3"= 15" sheave A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance. What should you do? - CORRECT ANS Replace it with a larger MOV On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the break. What is the issue? - CORRECT ANS Suici...

if a combination audible/visible appliances are installed, the location of the installed appliance shall be determined by the requirements of - correct answer the visible appliance what is the maximum number of 12-gaugeTHHN conductors that can be installed in 1-inch EMT - correct answer 26 Do you resistors are connected in parallel. R1 = 300 Ohms, R2 = 300 Ohms. What is the equivalent resistance? - correct answer 150 Ohms I room is 200 feet long and 100 feet wide, and the 8 foot high ce...

The resistance of electric flow through a circuit is measured in: A. Volts B. Amperes C. Ohms D. Joules - Answer-C. Ohms A circuit with a single path for electric current flow is defined as a(n): A. Parallel circuit B. Closed circuit C. Series circuit D. Open circuit - Answer-C. Series circuit The degree of resistance provided by an individual resistor within a circuit is measured in: A. Volts B. Watts C. Ohms D. Amperes - Answer-C. Ohms Within a circuit, the letter ( I ) is used ...

Solutions and Laboratory Manual for Electricity for HVACR 1st Edition by Joseph Moravek. Unit 1: Read This Unit First: What I Need to Know to Understand Electricity Unit 2: Ohms Law Unit 3: Safe Use of Electrical Instruments Unit 4: Electrical Fasteners Unit 5: Power Distribution Unit 6: National Electric Code Unit 7: Electrical Installation of HVAC Unit 8: Transformers Unit 9: Relays, Contactors and Motor Starters Unit 10: Capacitors Unit 11: Thermostats Unit 12: Pressure Switches Unit 13: Misc...

Resistance with 2 resistors - ANSWER (R1+R2)/(R1xR2) Resistance with more than 2 resistors - ANSWER 1/{(1/r1)+(1/r2)+(1/r3)} voltage drop single phase - ANSWER (2 x conductor length x I x kRating)/cmils voltage drop 3 phase - ANSWER (1.732 x conductor length x I x kRating)/cmils

Elevator Mechanic Exam Prep 2024 update with questions and correct answers Who can you demand a MSDS sheet from to check chemicals in a cleaning product. 110 PG 13 - ANSWER-Your elevator Company Superintendent/Manager 12 Floor Building with three cars, 3 floors will not get PI's. How many PI's in total do you need to order for this job? - ANSWER-12 Floors x 3 Elevators= 36 PI's - (3 from 3 floors)9 =27 a 75 Ohm resistor has blow and you don't have a replacement, What can you use? - ANSWE...