What is the purpose of the coarse setting of a synchro?

1 Answer

Answer :

.It ensures the synchro is on 0º, not 180º.

Related questions

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Last Answer : To improve overall synchro system accuracy by reducing stator currents.

Description : What is the primary purpose of a synchro system?

Last Answer : Precise and rapid transmission of data between equipment and stations.

Description : What is the reference point for alignment of all synchro units?

Last Answer : The voltmeter method.

Description : . What type of synchro system is used to transmit very large quantities?

Last Answer : A tri-speed synchro system.

Description : In a dual-speed synchro system what determines the two specific speeds at which the data will be transmitted?

Last Answer : The gear ratio between the two transmitters.

Description : What precaution should you take when substituting a synchro tester in a circuit for a transmitter?

Last Answer : Use only one receiver so as not to overload the tester.

Description : What is the most probable cause of trouble in a synchro system that has all of its receivers reading incorrectly?

Last Answer : The transmitter or main bus.

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Last Answer : An overload indicator.

Description : Name two types of trouble you would expect to find in a newly installed synchro system.

Last Answer : Improper wiring and misalignment.

Description : What should you do with a synchro that has a bad set of bearings?

Last Answer : Replace it.

Description : When you zero a synchro with a synchro tester, what is indicated by a jump in the synchro tester's dial when the S1 and S3 leads are momentarily shorted?

Last Answer : The synchro under test is not on electrical zero.

Description : What method of zeroing a synchro is perhaps the fastest but NOT necessarily the most accurate?

Last Answer : . The electrical lock method.

Description : When you zero a multispeed synchro system which synchro should you zero first?

Last Answer : The coarse synchro.

Description : Why should a synchro be rechecked for zero after it is clamped down?

Last Answer : To ensure that it did not move off zero while it was being clamped.

Description : When is a synchro receiver (TR) properly zeroed?

Last Answer : A TR is zeroed when electrical zero voltages exist across its stator windings at the same time its rotor is on zero or on its mechanical reference position.

Description : What is the main reason for using a multispeed synchro system instead of a single-speed synchro system?

Last Answer : Greater accuracy without the loss of self-synchronous operation.

Description : What is the name given to the synchro system that transmits data at two different speeds?

Last Answer : . A dual or double-speed synchro system.

Description : Why are synchro capacitors placed physically close to differentials transmitters and CTs?

Last Answer : To keep the connections as short as possible in order to maintain system.

Description : How are synchro capacitors connected in a circuit?

Last Answer : They are delta-connected across the stator windings.

Description : What type of current is eliminated by synchro capacitors?

Last Answer : Magnetizing current.

Description : What type of synchros usually require the use of synchro capacitors?

Last Answer : TDXs, CDXs, and Cts.

Description : In a control synchro system, when is the output of the CT reduced to zero?

Last Answer : When the CX and CT rotors are in correspondence.

Description : What type of synchro is used in systems requiring large amounts of power and a high degree of accuracy?

Last Answer : A control synchro.

Description : What determines whether a differential synchro adds or subtracts?

Last Answer : The way the differential synchro is connected in a system is the deciding factor on whether the unit adds or subtracts its inputs.

Description : What leads in a simple synchro system are connected to the ac power line?

Last Answer : The rotor leads.

Description : What two components make up a simple synchro transmission system?

Last Answer : A synchro transmitter and a synchro receiver.

Description : What method is used to prevent oscillations in large synchro units?

Last Answer : Mechanical damping.

Description : What is the physical difference between a synchro transmitter and a synchro receiver?

Last Answer : A synchro receiver uses some form of damping to retard excessive oscillations or spinning.

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Last Answer : The transmitter is in its zero-position when the rotor is aligned with the S2 stator winding.

Description : When will a synchro generate more heat than it is designed to handle?

Last Answer : Synchros have one primary winding that can be turned through 360º and three secondary windings spaced 120º apart.

Description : What unit of measurement refers to the torque of a synchro transmitter

Last Answer : Ounce-inches.

Description : In a TDX system with standard synchro connections, the TX rotor is at 120º and the TDX rotor is at 40º. What position will the TR indicate?

Last Answer : . 80º.

Description : What are the two major components of a synchro?

Last Answer : The rotor and the stator.

Description : On the synchro schematic symbol, what indicates the angular displacement of the rotor?

Last Answer : . The position of the arrow.

Description : Which of the two synchro designation codes is indicated by 5DG on a synchro nameplate?

Last Answer : The Navy prestandard designation code.

Description : What does the code 26V-11TX4D mean on a synchro nameplate?

Last Answer : It is the third modification of a 26-volt 400-hertz (torque) synchro transmitter whose body diameter is between 1.01 and 1.10 inches

Description : What is the difference between a torque synchro and a control synchro?

Last Answer : A torque synchro is used for light loads and a control synchro is used in systems desired to move heavy loads.

Description : Name the two general classifications of synchro systems

Last Answer : Torque and control.

Description : What should a voltmeter read when a TX is set on coarse zero?

Last Answer : Approximately 37 volts.

Description : Besides setting up the meter for expected voltage ranges, what must be strictly observed when taking dc voltage readings?

Last Answer : Polarit

Description : Figure 'A' of the diagram shown in the illustration represents a ______________. EL-0092 A. differential transformer B. saturable reactor C. synchro system D. magnetic amplifier

Last Answer : Answer: C

Description : A synchro has (A) a 3-phase winding on rotor and a single-phase winding on stator. (B) a 3-phase winding on stator and a commutator winding on rotor. (C) a 3-phase winding on stator and a single-phase winding on rotor. (D) a single-phase winding on stator and a commutator winding on rotor.

Last Answer : Ans: C Synchros : The basic synchro unit called a synchro transmitter. It’s construction similar to that of a Three phase alternator.

Description : The rotor of a synchro transmitter: -  a) uses a salient pole type of construction b) uses a cylindrical pole type of construction c) may use either salient pole or cylindrical type of construction d) none of the above

Last Answer : The rotor of a synchro transmitter: - uses a salient pole type of construction

Description : A synchro has a:  (A) 3-phase winding on the rotor and a single-phase winding on the stator  (B) 3-phase winding on the stator and a commutator winding on the rotor  (C) 3-phase ... single-phase winding on the rotor  (D) single-phase winding on the stator and a commutator winding on the rotor

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