# In a synchronous generator delivering lagging power factor load

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In a synchronous generator delivering lagging power factor load

(1) the excitation emf leads terminal voltage by the power angle (2) the excitation emf lags terminal voltage by the power angle (3) excitation emf leads the terminal voltage by the power factor angle (4) excitation emf lags the terminal voltage by the power factor angle

In a synchronous generator delivering lagging power factor load the excitation emf leads terminal voltage by the power angle

## Related questions

If the load of the normally excited synchronous motor is increased the power factor will?

The synchronous motor which works on leading power factor and does not drive any mechanical load is called?

In a synchronous generator if the excitation increased from a low value to normal value, with a fixed load  (A) The armature current increases and the power factor decreases  (B) The armature current decreases and the power factor also decreases  (C) The armature current decreases and the power factor increases but is lagging  (D) The armature current decreases and the power factor increases and is leading

In an alternator at lagging power factor the generated voltage per phase as compared to that at unity power factor?

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The power factor angle and torque angle of a salient pole synchronous generator drawing a current of 1.0 pu from a lagging load are 45o and 15o, respectively. The direct axis and quadrature axis currents, respectively, are (A) 0.5 pu, 0.866 pu (B) 0.866 pu, 0.5 pu (C) 0.707 pu, 0.707 pu (D) 0.5 pu, 0.5 pu

The armature reaction in a synchronous generator supplying leading power factor load is (A) magnetizing (B) demagnetizing (C) demagnetizing and cross-magnetizing (D) magnetizing and cross-magnetizing

How can we improve power factor using synchronous motor?

A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because?

Can a synchronous condenser improve power factor?

A transformer has negative voltage regulation when its load power factor is   (1) Zero (2) Unity (3) Leading (4) Lagging

If we change the excitation of synchronous machine will it affect on power factor?

If the field of synchronous motor is under excited, power factor will be?

The synchronous motor will develop maximum power when the load angle is?

Power station having Load factor = 70%, capacity factor = 50%, used factor = 60%, maximum demand = 20MW then annual energy production is  (1) 122.8 GWh (2) 198.55 GWh (3) 128.2 GWh (4) 188.82 GWh

Minimum voltage regulation occurs when the power factor of the load is?

In synchronous motor, does the winding losses vary with load?

What is the difference between synchronous and asynchronous generator?

The effect of increasing load on a synchronous motor running with normal excitation is (A) Increase both its Ia and power factor. (B) Decrease Ia, but increase power factor. (C) Increase Ia, but decrease power factor (D) Decrease both Ia and power factor.

In a synchronous motor which losses varies with load?

In order to have a lower cost of electrical energy generation the load factor  (1) and the diversity factor should be low (2) should be low but the diversity factor should be high (3) should be high but the diversity factor should be low (4) and the diversity factor both should be high

A three-phase synchronous motor connected to ac mains is running at full load and unity power factor. lf its shaft load is reduced by half and field current is held constant then its new power factor will be

The maximum reluctance power of a salient-pole synchronous motor having direct-axis reactance, 1.0 pu and quadrature-axis reactance, 0.5 pu, and input voltage, 1.0 pu is (A) 0.25 pu (B) 0.5 pu (C) 1.0 pu (D) 1.5 pu

The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as?

At which time power factor of the induction motor is low?

Load factor is the  (1) Ratio of maximum load on the station to sum of consumer's maximum load.  (2) Ratio of average demand to maximum demand.  (3) Factor used for increasing load.  (4) Reciprocal of (1).

The load duration curve for unity load factor will be of  (1) Rectangular shape (2) Triangular shape (3) L -shape (4) I -shape

Two synchronous generators operating in parallel supply a common load of 2.5 MW. The frequency-power characteristics have a common slope of 1 MW/Hz and the no-load frequencies of the generators are 51.5 Hz and 51.0 Hz, respectively. Then the system frequency is (A) 50 Hz (B) 51 Hz (C) 51.25 Hz (D) 51.5 Hz