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3 years ago

Why efficiency of gas turbines are lower than combustion engine

2 answers:

8 0

Answer: decrease in the thermal efficiency is due to the decrease in the compressor efficiency and pressure ratio. 18.18. Trends in gas turbine power and thermal efficiency due to compressor fouling when operating at low power

Explanation:

xxTIMURxx [149]3 years ago

7 0

The performance of power plants at partial load has become a significant operational consideration for electric power grids worldwide. This technical comparison examines the range of output and the part load efficiency of combustion engines and gas turbines, and how Wärtsilä power plants deliver enhanced flexibility.

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Answer:

Answer is B.

Explanation:

Subject verb agreement

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3 years ago

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The signal propagation time between two ground stations in a synchronous satellite link is about millisecond is

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270 is the answer for that

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3 years ago

Charging the system is being discussed. Technician A says that the refrigerant must be weighed (or metered) to obtain a proper c

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Charging the system is being discussed. Technician A is correct and Technician B is incorrect because overcharging can cause the system to reduce it capacity, but it does not reduce its cooling efficiency.

<h3>What is a coolant?</h3>

The coolants are the liquid that are present in machines to prevent the heating of the system or machines. Because machine and cars run they generate lots of heat that why there are coolants present.

Thus, the correct option is Technician A.

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2 years ago

In a CS amplifier, the resistance of the signal source Rsig = 100 kQ, amplifier input resistance (which is due to the biasing ne

lisov135 [29]

Answer:

406.140 KHz

Explanation:

Given data:

Rsig = 100 kΩ

Rin = 100kΩ

Cgs = 1 pF,

Cgd = 0.2 pF, and etc.

Determine the expected 3-dB cutoff frequency

first find the CM miller capacitance

CM = ( 1 + gm*ro || RL )( Cgd )

= ( 1 + 5*10^-3 * 25 || 20 ) ( 0.2 )

= ( 11.311 ) pF

now we apply open time constant method to determine the cutoff frequency

Th = 1 / Fh

hence : Fh = 1 / Th = $\frac{1}{(Rsig +Rin) (Cm + Cgs )}$

= $\frac{1}{( 200*10^3 ) ( 12.311 * 10^{-12} )}$ = 406.140 KHz

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3 years ago

Imagine you are designing a new backpack. Which of the following statement(s) about

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The answer is D.) both A and C

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4 years ago

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Why efficiency of gas turbines are lower than combustion engine​

Why efficiency of gas turbines are lower than combustion engine