Commutator Study guides, Class notes & Summaries

Master Electrical REAL Exam Questions And Correct Answers | Verified Control the speed of the motor - ANSWER The purpose of having a rheostat in the field of a DC shunt motor is to ________. An ammeter, a wattmeter, and a voltmeter - ANSWER You are to check the power factor of a load, you cannot get a power factor meter, you would use__________. Lead sheath - ANSWER High voltage cable which is to be installed in underground ducts is generally protected with a __________. Lower watt...

A length of coaxial cable used for computers, radio or television signals, is open at both ends. With an ohm meter, the resistance from the center conductor to the shield is 80 ohms. What does this indicate? A. THE CABLE IS PARTIALLY SHORTED The transistor configuration shown in the figure is B. NPN The Y axis of an oscilloscope is used to measure C. AMPLITUDE Which one of the following will cause a generator to produce DC voltage rather than AC voltage? C. THE COMMUTATOR A 4.8 V battery ...

4th Class ABSA Exam Part A Practice Questions and Answers 100% Pass Absolute pressure is: - Answer- gauge pressure plus atmospheric pressure The motion of moving parts is _____ by friction: A: Prevented B: Improved C: controlled D: resisted E: Regulated - Answer- D: resisted Voltage is a) the rate of current flow b) the rate of electron flow c) electromotive force d) Kinetic energy e) A form of power - Answer- c) electromotive force The resistance of a conductor is affected by: 1...

What is the commutator [qi, pj]? iℏδij What would be the value of d<O>/dt? i<[H,O]>/ℏ + <dO/dt> What are the momentum operators in cartesian coordinates? pi = (ℏ/i)*d/dqi How is angular momentum defined in cartesian coordenates? L = r x p What is the angular momentum operator in terms of tensors? Lj = εjkl * rk * pl What is the commutator [AB,C]? A[B,C] + [A,C]B What is the commutator of the Hermitian operator and the square angular momentum operator? 0

This is the third assignment required for unit 15 Electrical Circuits BTEC applied science. This assignment was awarded a distinction grade and it covers all the key aspects of the specification. Please do not copy use as a guide only, good luck!

NEIEP 400 Final Exam Review Questions With Answers Latest Updated 2024/2025. A machine that converts mechanical energy into electrical energy - answers>Generator 4. What is the purpose of interpoles in a motor? - answers>Helps prevent neutral planes from shifting 5. In the basic loop circuit generator armature supplies DC power to what DC elevator hoist motor component? - answers>Motor Armature 6. If you have leakage resistance to ground, what will you use to test? - answers>M...

Absolute pressure is: - ANS gauge pressure plus atmospheric pressure The motion of moving parts is _____ by friction: A: Prevented B: Improved C: controlled D: resisted E: Regulated - ANS D: resisted Voltage is a) the rate of current flow b) the rate of electron flow c) electromotive force d) Kinetic energy e) A form of power - ANS c) electromotive force The resistance of a conductor is affected by: 1. Cross section area 2. Length 3. Tempe...

4th Class ABSA Exam Part A Practice Questions and Answers 100% Pass Absolute pressure is: - Answer- gauge pressure plus atmospheric pressure The motion of moving parts is _____ by friction: A: Prevented B: Improved C: controlled D: resisted E: Regulated - Answer- D: resisted Voltage is a) the rate of current flow b) the rate of electron flow c) electromotive force d) Kinetic energy e) A form of power - Answer- c) electromotive force The resistance of a conductor is affected by: 1...

An MOV burns out, you replace it but cannot read voltage or resistance. What should you do? Replace it with a larger one (630) * On a Ward-Leonard circuit, the brake is set but the motor is trying to slip through the brake. What circuit is the issue? Suicide circuit (425) ** A Hydro runs up with no load but does not run up with a full load. What is the issue? The relief valve is set too low (805) ** Runby for a 1:1 car hits the CWT buffer 4" below the top landing. The CW...

After installing a new battery how long should you wait to allow for pcm time - no need to wait As blower motor speed decreases the voltage drop across the resistance block.... - increases What should you do first when replacing junction block or fuse? - Unlock the battery ground cable The polarity of the voltage applied to the electromagnetic coils of an actual working DC motor is.... - a commutator When performing a volt drop test the volt meter setting should be set to the following.. - ...