Which of the following is a benefit of gas turbines?
A. They are smaller and more compact than electric motors.
B. They can be used as a backup electrical generating source.
C. They require a boiler and all its auxiliaries to produce steam.
D. It is harder to vary the speed and energy output.
A. Incorrect. Gas turbines are not smaller and more compact than electric motors.
B. Correct. A benefit of gas turbines is that they can be used as a backup electrical generating source.
C. Incorrect. Gas turbines do not require a boiler and all its auxiliaries to produce steam, this is a requirement of a steam turbine.
D. Incorrect. It is not hard to vary the speed and energy output of gas turbines.
You might also like to view...
What is the cofunction of the tangent of 34° 9'?
What will be an ideal response?
Un transformador con un primario de 400 vueltas y un secundario de 300 vueltas tiene una:
a. relación de vueltas de elevación de 4:3. b. relación de vueltas de reducción de 4:3. c. relación de vueltas de elevación de 3:4. d. relación de vueltas de reducción de 3:4.
What are the five Agriscience Fair categories?
What will be an ideal response?
The concrete form accessory shown in the figure is a _____
a. spacer b. form tie c. waler d. spreader