What minimum resistance value can the rheostat be set

Assignment Help Electrical Engineering
Reference no: EM13280566

A 120 V lamp-dimming circuit is controlled by a rheostat and protect from excessive current by a 2 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 15-ohm.

Reference no: EM13280566

Questions Cloud

State what is the half- life of the reaction : The rate law for the reaction 3A ? 2B is rate = k[A] with a rate constant of 0.0447 hr-1. What is the half- life of the reaction
What would be the filament resistance of a bulb designed : Consider the problem of using a low voltage system to power a small cabin. Suppose a 12-V system powers a pair of 100-W light bulbs (wired in parallel). A) What would be the filament resistance of a bulb designed to use 100 W when it receives 12 V
Calculate the total salt concentration of a cup of soup : Calculate the total salt concentration (in mole litre-1) of a cup of soup assuming that both the sodium and potassium are added as chloride salts. What is the concentration of chloride in gram per 100 mL?
Explain carbon dioxide and water and sodium acetate : A 100 mL of a 0.100 M solution of vinegar (acetic acid, CH3COOH) is mixed with 100 mL of a 0.100 M baking soda (sodium bicarbonate) solution and a reaction proceeds that generates carbon dioxide, water and sodium acetate.
What minimum resistance value can the rheostat be set : A 120 V lamp-dimming circuit is controlled by a rheostat and protect from excessive current by a 2 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse
What is the angular acceleration of the ferris wheel : A 50 kg person is riding a Ferris wheel. The Ferris wheel consists of 8 metal cars, each with mass 1500 kg located 15 m from the center. What is the angular acceleration of the Ferris wheel
Explain an equilibrium mixture of pcl5 : An equilibrium mixture of PCl5,PCl3 and Cl2 at a certain temperature contains 8.3×10^?3M PCl5 , 1.5×10^?2M PCl3 and 3.0×10^?2M Cl2.
Find the fundamental period of the signals are periodic : find the fundamental period. x(t)= summation of k=-5 and 5 w(t-2k) for w(t) depicted in figure. the figure is graph from negative 1 to infinite and postive 1to infinite on x-axis, a straight line connecting the negative 1 and 1 on the x-axis to p..
What is the speed of the third fragment : An object initially at rest explodes and splits into three fragments. what is the speed of the third fragment

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Calculate the l and c values of an l network

Calculate the L and C values of an L network that is to match a 9 ohm transistor power amplifier to a 75 ohm antenna at 122 MHZ.

  How sensitive is the ror to the salvage value

You are evaluating the feasibility of adding an injection molder to fabricate plastic sporks (everybody’s favorite harmless utensil) for the US Facility for the Criminally Insane. An injection molder will cost $1,200,000 installed.

  Write software to spin the motor at 1 rps

Design an interface for a 12 V, 500 mA bipolar stepper motor. There are 200 steps per revolution. Write software to spin the motor at 1 rps.

  Determine mechanical power developed by the unloaded motor

Given: A permanent magnet DC motor has a machine constant, Kv = 0.5 V-s. The no-load torque is 1.0 Nm. Assume mechanical torque loss is a constant. Determine the mechanical power developed by the unloaded motor at 1250 rpm.

  Describe whether google is exploitive and impoverished

Describe whether Google is exploitive, impoverished, supportive, or enlightened. Describe the features google that indicate which kind of organization it is. Describe five steps google could take to become better and move up in the scale.

  What is most common technique used to correct power factor

In a typical commercial electrical distribution system, which is more common: an inductive power factor, or a capacitive power factor. What is the most common technique used to correct this kind of low power factor.

  What is the voltage across capacitor after switch is closed

An uncharged capacitor and resistor are connected in series with a 12V source and switch. What is the voltage across the capacitor after the switch is closed and the capacitor is fully charged

  Calculate the response of each of the receiver arms to qpsk

First draw the transmit con-stellation and the receive constellation with ideal phase tracking and sampling. Note:they are obviously the same constellations. Now, assume that receiver synchronization is off by a phase angle.

  What annual revenue is required to cover fixed costs

What annual revenue is required to cover fixed costs? What will be the annual variable costs? How much will electricity cost per kWh?

  Which is not always possible within fcc guidelines

Transmitting data at higher speeds generally requires a wider bandwidth, which is not always possible within FCC guidelines. In addition to the wider bandwidth, higher speed transmission also requires a higher transmit power. Why

  Determine the time-domain current i across the capacitor

The initial voltage across the capacitor, defined using the passive sign convention in terms of the current i , is 4.5 V. (a) Write the time domain integral equation that arises from application of KVL. (b) By first solving for I(s), determine the..

  What kind of tools are available to work with c-style string

How do you create a C-style string. Give examples. How do you input or output a C-style string. What kinds of tools are available to work with C-style strings. Show some examples of using those tools.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd