Low voltage Study guides, Class notes & Summaries

Zener current will decrease - ANSWER-Refer to figure 1. If the load resistance R2 is reduced by half what happens what happens to zener diode? 4v - ANSWER-Refer to figure 1. The zener diode is designed to breakdown at 6VDC what is the voltage drop across R1 with a constant DC supply of 10VDC 30 rpm - ANSWER-An elevators motor rotates at 1200 rpm at contract speed and is geard at a ratio of 40:1. If the motor turns 40 rpm the sheave turns 1 rpm. What is the actual speed of the drive sheave ...

A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12" sheave. What sheave is required? - 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? - 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? - Suicide Circuit You have an old DC motor ...

ATI RN MED-SURG PROCTORED EXAM 2023 (FULL EXAM) SOLVED CORRECTLY. 1. The nurse is preparing the discontinue long term TPN therapy for a client. The nurse should plan to discontinue the TPN gradually to reduce the risk of which of the following adverse effects? a. Hyperglycemia b. Diarrhea c. Constipation d. Hypoglycemia- You taper it off to avoid this!!! Rationale PDF p.298: Never abruptly stop TPN. Speeding up/slowing down the rate is contraindicated. An abrupt rate change can alter blo...

Fire Officer I EXAM LATEST ACTUAL EXAM QUESTIONS AND ANSWERS (100% VERIFIED ANSWERS) | GRADED A+. What are the 5 types of building construction? - CORRECT ANSWER Type 1- fire resistive Type 2- non combustible Type 3- ordinary Type 4- heavy timber Type 5- wood frame -Type 1 and 2 are non combustible -Type 3, 4, and 5 are combustible Fire drills in schools - CORRECT ANSWER Done monthly, different times of day Rough drawing of building is called - CORRECT ANSWER Field sketch Microwave ...

Rheobase - the lowest point on a strength duration curve at an infinitely long pulse duration Chronaxie time - the pulse width at twice the rheobase value. It approximates the most efficient stimulation pulse duration Charge (formula) - Charge= I(current) x T(time) Furman's formula - Energy(microjoules)= I(current)xV(voltage)xT(pulse width) Ohms law formula - Voltage(electromotive force)= I(current/flow of electrons) x R(resistance to current flow in ohms) Functional Refractory P...

ATI RN MEDSURG 2023/2024 PROCTORED EXAM QUESTIONS WITH RATIONALE 70 QUESTIONS AND ANSWERS 1. The nurse is preparing the discontinue long term TPN therapy for a client. The nurse should plan to discontinue the TPN gradually to reduce the risk of which of the following adverse effects? a. Hyperglycemia b. Diarrhea c. Constipation d. Hypoglycemia- You taper it off to avoid this!!! Rationale PDF p.298: Never abruptly stop TPN. Speeding up/slowing down the rate is contraindicated. An abrupt r...

Mike Holt Chapter 3 Study Guide Complete Questions And Answers 2023 D. A or B Correct Answer: Where type NM cables pass through cut or drilled slots or holes in metal members, the cable shall be protected by ___ which are installed in the opening prior to the installation of the cable and which securely cover all metal edges. A. listed bushings B. listed grommets C. plates D. A or B Listed Correct Answer: For locations not specifically identified in Table 300.5, a lesser cover depth than...

Question Which one of is a fluorescent surface-mounted fixture with a prismatic lens? Answers: • Shower Light • Universal • Wraparound • Strip Light correct answers Answer Wraparound Question Which statement is FALSE with respect to a 60A19W lamp? Answers: • 60 describes the output • A describes the shape • 19 describes the diameter in 1/8's of an inch • W describes the coating or finish of the bulb correct answers Answer 60 describes the output Question ...

Worn motor bearings are most to result in a(n)___. continuous overload A high-level short circuit current may exceed ___. 50,000A` Accidental contact between an electrical conductor and a grounded enclosure is called a(n)___. ground fault Most arcing faults begin as ___. ground faults A plug fuse with a hexagonal cap has a maximum amperage rating of ___. 15A Under normal operation and at currents near its ampere rating, a fuse operates as a ___. conductor...

What are the 3 funtions of an Oil Burner nozzle? - Answer- Atomize, Meter, Patter. What are the 2 voltage circuits of a primary control? - Answer- Line & Low. What is the function of a fuse? - Answer- Protect circuit. What is the High Limit cut out? - Answer- Max safe Temp or Pressure setting. What is the High Limit cut in? - Answer- Cut out minus Differential. What is the "Max" Lockout time for a burner with a 3 GPH Flow Rate? - Answer- 45 Seconds. What is the minimum stack ...