Bissoy.com
Doctors Medicines MCQs Q&A

The value of power factor is generally _____________________

The value of power factor is generally _____________________ Correct Answer less than unity

The value of power factor depends upon the relationship between the inductance and resistance in the load and it can never be greater than unity. The usual system load has a power factor varying from 0.8 to 0.9. But if various induction motors are installed in the load, the value will be 0.5.

Related Questions

Consider the following statements with respect to synchronous machines. State whether these statements are true or false. (a) Armature reaction is demagnetising when a generating machine supplies zero power factor lagging current. (b) Armature reaction is magnetising when a generating machine supplies zero power factor leading current. (c) Armature reaction is mostly cross-magnetising, though it has a small demagnetising component, when a generating machine supplies unity power factor current.
Which of the following statements are true? a. As load increases armature current decreases, regardless of excitation. b. For under and over excited motors, power factor tends to approach zero with increase in load c. With normal excitation when load is increased, change in armature current is greater than in power factor which tends to become increasingly leading. d. Both with under and over excitation, change in power factor is greater than in armature current with increase in load.
Which of the following statements is/are correct? 1. The earth is nearest to the Sun at Perihelion, which generally occurs on January 3. 2. The earth is farthest away from the Sun at Perihelion, which generally occurs on July 4. 3. The earth is farthest away from the Sun at Aphelion, which generally occurs on July 4. 4. The earth is nearest to the Sun at Aphelion, which generally occurs on January 3. Select the correct answer using the code given below:
In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
Fraternity, then, was meant to complement civil rights, _______________ to destroy them. The _____________________ framers did not use this symbolic term for a court to come along 66 years _________________, and ______________________ it for the purposes of subordinating individual rights to some mythic notion of community harmony, entirely submerging the individual _______________ the society.
The _____________________ framers did not use this symbolic term
In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives. Several countries ___________________ the world are now replacing the __________________ model of criminal justice partly_____________________ wholly with different models of restorative justice, _____________________ promising results in crime control. Theprocess is more collaborative, consensual and inclusive, that is characteristic ____________________ indigenous systems of justice. model of criminal justice partly _____________________
In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives. Several countries ___________________ the world are now replacing the __________________ model of criminal justice partly_____________________ wholly with different models of restorative justice, _____________________ promising results in crime control. Theprocess is more collaborative, consensual and inclusive, that is characteristic ____________________ indigenous systems of justice. _____________________ promising results in crime control.
Which of the following types of power have to be pre-justified; and, when the need and occasion arise, must very soon be post-justified ?  1. Reward power 2. Coercive power 3. Legitimate power 4. Expert power 5. Referent power Which of the above statements are correct ? 
List I embodies situational leadership style and List II indicates the power resource which supports them. List I Situational leadership style List II Power resource a)  Directive style (HT / LR) i) Expert power b) Supportive style (HT / HR) ii)  Information power c) Participative style (LT / HR) iii)  Reward power d)  Delegating style (LT / LR) iv)  Coercive power   *HT = High Task LT = Low Task HR = High Relationship LR = Low Relationship Choose the correct answer from the options given below:
Which of the following statements are true about soft power?
1. Soft power can be used by state actors.
2. Soft power can be used by non-state actors.
3. Soft power is the second face of power.
4. Soft power is a form of idealism.
Select the correct answer:
A synchronous motor installed at the receiving end substation operates with such an excitation that it takes power at lagging power factor. Now if the applied voltage of the synchronous motor goes down, the power factor of the synchronous motor will