[amp_mcq option1=”High maintenance cost” option2=”Continuous losses in motor” option3=”Noise” option4=”All of the above” correct=”option4″]
Detailed SolutionWhich of the following is the disadvantage of a synchronous condenser ?
Economics of power generation
2. In a load curve the highest point represents
[amp_mcq option1=”peak demand” option2=”average demand” option3=”diversified demand” option4=”none of the above” correct=”option1″]
Detailed SolutionIn a load curve the highest point represents
3. ________ will be least affected due to charge in supply voltage frequency.
[amp_mcq option1=”Electric clock” option2=”Mixer grinder” option3=”Ceiling fan” option4=”Room heater” correct=”option1″]
Detailed Solution________ will be least affected due to charge in supply voltage frequency.
4. Large capacity generators are invariably
[amp_mcq option1=”water cooled” option2=”natural air cooled” option3=”forced air cooled” option4=”hydrogen cooled” correct=”option1″]
5. Generators for peak load plants are usually designed for maximum efficiency at
[amp_mcq option1=”25 to 50 percent full load” option2=”50 to 75 percent full load” option3=”full load” option4=”25 percent overload” correct=”option3″]
Detailed SolutionGenerators for peak load plants are usually designed for maximum efficiency at
6. In an interconnected system, the diversity factor of the whole system
[amp_mcq option1=”remains unchanged” option2=”decreases” option3=”increases” option4=”none of the above” correct=”option3″]
Detailed SolutionIn an interconnected system, the diversity factor of the whole system
7. _______ will offer the least load.
[amp_mcq option1=”Vacuum cleaner” option2=”Television” option3=”Hair dryer” option4=”Electric shaver” correct=”option1″]
8. Which of the following is an advantage of static capacitor for power factor improvement ?
[amp_mcq option1=”Little maintenance cost” option2=”Ease in installation” option3=”Low losses” option4=”All of the above” correct=”option4″]
9. Demand factor is defined as
[amp_mcq option1=”$$\frac{{{\text{Average load}}}}{{{\text{Maximum load}}}}$$” option2=”$$\frac{{{\text{Maximum demand}}}}{{{\text{Connected load}}}}$$” option3=”$$\frac{{{\text{Connected load}}}}{{{\text{Maximum demand}}}}$$” option4=”$${\text{Average load}} \times {\text{Maximum load}}$$” correct=”option2″]
10. For the same cylinder dimensions and speed, which of the following engine will produce least power?
[amp_mcq option1=”Supercharged engine” option2=”Diesel engine” option3=”Petrol engine” option4=”All of the above engines will equal power” correct=”option1″]