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Answer :

An alternator coupled to a hydraulic turbine runs at slow speed, as compared to others.

Related questions

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Last Answer : In an alternator, at lagging power factor the generated voltage per phase as compared to that at unity power factor must be more than terminal voltage.

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Last Answer : Synchronous motor always runs at synchronous speed.

Description : Is the speed of alternator is directly proportional to frequency?

Last Answer : Yes, speed of alternator is directly proportional to frequency.

Description :  applications of RC coupled amplifier

Last Answer : Applications of RC coupled amplifier: (i) Widely used as Voltage amplifiers. (ii) They are used in Public Address System. (iii) In Tape recorders. (iv) In stereo amplifiers (v) In T.V. V.C.R. and C.D. Players.

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Last Answer : Advantages:  Due to absence of coupling capacitors, the gain does not reduce on the lower frequency side.  This amplifier can amplify dc signals. Reduced cost and complexity due to absence of ...   The output waveform has a dc shift.  Poor frequency response at a higher frequency.

Description :  transformer coupled amplifier

Last Answer :  transformer coupled amplifier

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Last Answer : Parameter RC coupled Transformer coupled Direct coupled  Coupling element Resistor and capacitor Transformer No element Impedance matching Poor Excellent good Frequency ... Low frequency amplifier,opamp Size and cost small Large and bulky least

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Last Answer : Advantages: 1. The frequency response is excellent 2. The circuit is very compact and extremely light 3. Cost is low because it employ resistors and capacitors which are cheap 

Description : Explain DC coupled drive circuit with unipolar output.

Last Answer : DC coupled drive circuit with unipolar output: The figure shows the circuit and waveforms

Description : In an AC. circuit, a low value of kVAR compared with kW indicates?

Last Answer : In an AC. circuit, a low value of kVAR compared with kW indicates high power factor.

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Last Answer : When a conductor carries more current on the surface as compared to core, it is due to skin effect.

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Description : What is an alternator?

Last Answer : Ans. Alternator is a machine which converts mechanical energy into electrical energy

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Description : Define armature reaction in an alternator. Explain the effect of armature reaction at various P.F. of loads of alternator.

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Description : Draw equivalent circuit of alternator.

Last Answer : Equivalent circuit of alternator

Description : Explain the construction of alternator with neat diagram.

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Description : Alternator

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Description : While keeping the excitation constant, if the steam supply of an alternator running in parallel with another identical alternator is increased, then (A) It would over-run the other alternator (B) Its rotor ... (C) Its portion of share in load will increase (D) Its power factor would be decreased.

Last Answer : While keeping the excitation constant, if the steam supply of an alternator running in parallel with another identical alternator is increased, then Its portion of share in load will increase

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Last Answer : The fractional-pitch used for eliminating 7th harmonic from the emf wave of an alternator is 6/7

Description : At which power factor alternator is said to be overexcited?

Last Answer : At leading power factor alternator is said to be overexcited.

Description : The power factor of an alternator depends on?

Last Answer : The power factor of an alternator depends on load.

Description : The magnitude of various voltage drops that occur in an alternator depends on?

Last Answer : The magnitude of various voltage drops that occur in an alternator depends on load current.

Description : In alternator where the voltage drop occurs?

Last Answer : In alternator voltage drop occurs in armature resistance, leakage reactance, and armature reactance.

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