Which of the following is NOT a valid advantage of static capacitors being used for power factor improvement?

Less maintenance
Long service life – more than 15 years
Low losses
No rotating parts

LohaHridoy

5 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 2 : Long service life – more than 15 years

Static Capacitors:

The power factor can be improved by connecting capacitors in parallel with the equipment operating at a lagging power factor. The capacitor (generally known as a Static (capacitor) draws a leading current and partly or completely neutralizes the lagging reactive component of the load current. This raises the power factor of the load. For three-phase loads, the capacitors can be connected in delta or star.

Advantages:

They have low losses.
They require little maintenance as there are no rotating parts.
They can be easily installed as they are light and require no foundation.
They can work under ordinary atmospheric conditions.

Disadvantages:

They have short service life ranging from 8 to 10 years.
They are easily damaged if the voltage exceeds the rated value.
Once the capacitors are damaged, their repair is uneconomical.

5 views Answered 2022-09-04 04:29

Related Questions

The head if newly formed government desires to appoint five of the six selected members P, Q, R, S, T and U to portfolios of Home, Power, Defence, Telecom and Finance. U does not want any portfolio if S gets one of the five. R wants either Home or finance or no portfolio. Q says that if S gets either power or Telecom, then she must get the other one. T insists on a portfolio if P gets one . Which is the valid distribution of portfolios?

1 Answers 5 Views

A synchronous motor on load draw a current at a leading power factor angle ϕ. If the internal power factor angle which is the phase angle between the excitation emf and the current in the time phasor diagram is ψ. Then the air gap excitation mmf lags the armature mmf by?

1 Answers 40 Views

Engines are rated at specified conditions. Then which of the following statements are correct 1. Power developed increases as local temperature increases. 2. Power developed increases as local temperature decreases 3. Power developed is not dependent on local temperature. 4. Power developed increases as local atmospheric pressure increases. 5. Power developed increases as local atmospheric pressure decreases.?

1 Answers 5 Views

Consider the following opinions regarding the advantage and disadvantage of a Mealy model: 1. Advantage: Less number of states (hence less hardware) Disadvantage: Input transients are directly conveyed to the output 2. Advantage: Output remains stable over the entire clock period. Disadvantage: Input transients persist for a long duration at the output. Which of the above is/are correct?

1 Answers 5 Views

Which of the following is NOT the necessity of power factor improvement?

1 Answers 4 Views

Which of the following is not a VALID advantage of digital filters over analog filters?

1 Answers 4 Views

Which of the following statements are TRUE in a contractual capacity A. Law presumes that every person is competent to contract unless otherwise proved B. That a minor can make a contract for necessities of life C. That a person of unsound mind can enter into the family contracts D. A convict cannot enter into a valid contract nor can sue E. That a wife can always make valid business contracts and bind her husband Choose the correct answer from the options given below:?

1 Answers 6 Views

Which device is employed to reduce the power factor in the case of the leading power factor in the transmission line 1. Synchronous condenser 2. SVC 3. Reactor?

1 Answers 5 Views

Which of the following is NOT a valid advantage of fluorescent lamps?

1 Answers 4 Views

Which of the following is NOT a valid advantage of hybrid stepper motors?

1 Answers 7 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)