R resistivity - Samenvattingen, Aantekeningen en Examens

MCQ 770 Questions & Answer Electrical Engineering 2024 UpdateMCQ 770 Questions & Answer Electrical Engineering 2024 Update 1. The ratio of voltage and electric current in a closed circuit a. remains constant b. varies c. increases d. falls Ans-c 2. The curve representing ohm's law is a. sine function b. Linear c. a parabola d. a hyperbola Ans-b 3. The resistance of a conductor having length l area of cross section a and resistivity ρ is given as: a. ρa/l b. ρl/a c. ρla d. l/ρ...

What's the equation for the volume of the cylinder? CORRECT ANSWER V (volume)= pi multiplied by R squared multiplied by the height Example: radius is 6" height is 30 V=3.1416•6•6•30 A drill draws a current (I) of 4.5 amps and resistance of 16.0 ohms, how do You find the power(watts)? CORRECT ANSWER P=I squared (amps) multiple by R(resistance) Example:P=4.5•4.5•16.0 4.5•4.5=20.25 20.25•16.0=324 P=324 What is the equation for distance? CORRECT ANSWER D=R•T D(distan...

AQA A-LEVEL PHYSICS 7408/3A Paper 3 Section A Question Paper + Mark scheme [MERGED] June 2022 *JUNA01* IB/M/Jun22/E8 7408/3A For Examiner’s Use Question Mark 1 2 3 4 TOTAL Materials For this paper you must have: • a pencil and a ruler • a scientific calculator • a Data and Formulae Booklet • a protractor. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the ques...

What's the equation for the volume of the cylinder? - Answer- V (volume)= pi multiplied by R squared multiplied by the height Example: radius is 6" height is 30 V=3.1416•6•6•30 A drill draws a current (I) of 4.5 amps and resistance of 16.0 ohms, how do You find the power(watts)? - Answer- P=I squared (amps) multipled by R(resistance) Example:P=4.5•4.5•16.0 4.5•4.5=20.25 20.25•16.0=324 P=324 What is the equation for distance? - Answer- D=R•T D(distance=R(rate) mul...

Elevator mechanics exam 300 Questions and answers 2023 What's the equation for the volume of the cylinder? V (volume)= pi multiplied by R squared multiplied by the height Example: radius is 6" height is 30 V=3.1416•6•6•30 A drill draws a current (I) of 4.5 amps and resistance of 16.0 ohms, how do You find the power(watts)? P=I squared (amps) multipled by R(resistance) Example:P=4.5•4.5•16.0 4.5•4.5=20.25 20.25•16.0=324 P=324 What is the equation for distanc...

Ohm's Law relates the following... - ANSWER-volts, amps, resistance Resistance to current flow is lowest for a) low conductivity media b) small cross sectional area media c) short length of conductor d) high resistivity media - ANSWER-c In a series circuit a) voltage drops are always equal b) total resistance equals the sum of individual resistances c) current varies through resistors d) total current is equal to the sum of the current through each resistor - ANSWER-b Accor...

_________ Diol: two hydroxyl functional groups (- OH) bound to the same carbon atom. Formed when oxygen from water does a nuc attack on carbonyl Correct Answer: geminal Blue light is _____nm and red light is _____nm Correct Answer: 490, 700 A Lewis acid (donates/ accepts) what? Correct Answer: accepts electrons A Lewis base (donates/ accepts) what? Correct Answer: donates electrons T/F activation energy decreases when temperature increases. Correct Answer: False (Ea is not depen...

What does the "Single-Point Resistivity Log" show and what area is it limited to? - ANSWER-A log that measures the resistivity using 2 electrodes and having a limited area of investigation of from 5 to 10 times the electrode diameter What is the "Area of Influence" of a well? - ANSWER-The area within which the potentiometric surface is lowered by withdrawal or raised by injection, of water through a well Define aquifer - ANSWER-A geologic unit that is saturated and sufficiently permeab...

NACE Exam - Do Tests (Start with Terms) correctly answered 2023 Study guide Corrosion A) is defined by NACE International as the deterioration of a material, usually a metal that results from a reaction with its environment. B) is produced when acids dissociate, when cation takes place C) is the division of chemistry that deals with the transfer of electric charge in chemical reactions D) involves the movement of electrons anode to cathode for the reduction reaction to occur E) is eq...