Squirrel cage - Study guides, Class notes & Summaries

Journeyman Electrician Exam 3 Where a water pipe passes over an indoor motor control center, leak protection apparatus shall have a MINIMUM clearance of _____. a) 6 feet to the protection apparatus b) 6 feet to the water pipe c) 6 1⁄2 feet to the protection apparatus d) 6 1⁄2 feet to the water pipe - A: 6 feet to the protection apparatus Ref: 110.26(F)(1)(a) Branch circuit grounded conductors that are not connected to an overcurrent device shall be permitted to be sized at LEA...

NORA Oil Heat Exam Review Questions with Verified Answers 1. D)Combustion Air 2. B)Incomplete Com- bustion 3. B)Push flue gas- es through tighter boilers 4. B)Provides a place for bacteria to grow 5. D)All 6. A)Tells delivery person when to stop 7. C)Use a hand pump to suck the dirt out What is the final adjustment you make when tuning up an oil burner? A) Draft B) Change Nozzle C) Oil Pressure D)Combustion Air What is the effect of having a dirty burner squirrel cage fan? ...

Compressors, Fans, and Blowers Test Questions with Answers The flow of air or gas is carried by the __________ created by the energy transmitted to the gas by the rotating wheel - Answer-pressure differential If no resistance to flow exists, no inlet and outlet duct, the fan provides the gas with ________ only, and no compression or rarefaction occurs. - Answer-velocity energy It consists of an impeller of the squirrel-cage type, operating within a scroll-type housing and including drivi...

Journeyman Electrician Final Test Questions with Correct Answers When determining the initial standard size time-delay fuse for branch-circuit, short-circuit, and ground-fault protection for a threephase, continuous duty, squirrel cage, AC motor, the fuse shall have a rating of _____ of the FLC of the motor. When the value determined does not correspond to a standard ampere rating, the next higher standard rating shall be permitted. a) 175 percent b) 150 percent c) 225 percent d) 250 perc...

Journeyman #6 Exam Questions and Answers Something that would affect the ampacity of a conductor would be __________. I. Voltage II. Amperage III. Length IV. Temperature a. I only b. II only c. III only d. IV only - Answer-D Alternating currents may be increased or decreased by means of a __________. a. Motor b. Transformer c. Dynamo d. Megger - Answer-B Fixtures supported by the framing members of suspended ceiling systems shall be securely fastened to the ceiling framing member...

What is the final adjustment you make when tuning up an oil burner? A)Draft B) Change Nozzle C)Oil Pressure D)Combustion Air - ANSWER D)Combustion Air What is the effect of having a dirty burner squirrel cage fan? A)Water Hammer B)Incomplete combustion C)Low Co2 D)Blocked Chimney - ANSWER B)Incomplete Combustion New burners produce "high static pressure" A)Produce more spark B)Push flue gases through tighter boilers C) Get better atomization - ANSWER B)Push flue gases through...

NORA Oil Heat Exam Review Questions + Answers Rated 100% Correct!! What is the final adjustment you make when tuning up an oil burner? A)Draft B) Change Nozzle C)Oil Pressure D)Combustion Air D)Combustion Air What is the effect of having a dirty burner squirrel cage fan? A)Water Hammer B)Incomplete combustion C)Low Co2 D)Blocked Chimney B)Incomplete Combustion New burners produce "high static pressure" A)Produce more spark B)Push flue gases through tighter boilers C) Get bett...

in a guardrail system; the guardrail can be made of any of the following except? - Answer-Rope banding What is type USE cable primarily used for? - Answer-Direct burial in the earth Electrical gloves should be inspected before each use to determine: - Answer-The maximum voltage they can stand. Which of the following is the classified location where combustible fibers are always present? - Answer-Class 3, Division 1 As the load decreases on a squirrel cage induction motor; its power f...

a conductor loop is rotated uniformly within a two pole magnetic field, at what point is the maximum voltage induced? - ️️when the loop is cutting the lines of flux at 90 degrees. Apparent power (inductive loads - ️️ CIVIL - ️️in a Capacitor, the I leads the V, whereas, the V leads the I in an L: inductor Equation for Power Factor in single phase - ️️PF = P(W) / VA formula to calculate total resistance in a resistive parallel circuit - ️️1/Rt = 1/R1 + 1/R2 + 1/R3 + ... h...

False - Answer Power electronic for modern battery electric vehicles have efficiencies less than 80%. (T/F?) True - Answer A disadvantage of a DC motor with brushes and mechanical commutator (switch) is that the brushes wear out and need to be replaced. (T/F?) False - Answer Most modern electric cars use three phase variable reluctance motors. (T/F?) True - Answer Modern three phase brushless Dc motors (synchronous AC motors) have strong permanent magnets in the rotors (T/F?...