?Two technicians are discussing how excessive valve overlap affects a turbocharged engine. Technician A says that a turbocharger operates on backpressure in the exhaust. Technician B says that if the turbo operates at too low an rpm, backpressure can flow through the open exhaust valve into the intake air stream, limiting boost pressure into the cylinder. Who is right?
A. Technician A only
B. Technician B only
C. ?Both A and B
D. ?Neither A nor B
Answer: C
You might also like to view...
Which of the following is not one of the five practices of good product development?
A. Senior management committed to the design process B. Open information sharing C. Clear vision for product D. Commitment to the dominant design
The ____________________ is the tissue that transports raw nutrients throughout the tree
Fill in the blank(s) with correct word
Using superposition, find V? in the circuit of Fig. 4.76.
 FIGURE 1.png)
The voltage across the terminals of a circuit is v(t) = [30 + 20 cos (60? t + 45°) + 10 cos (120? t - 45°)] V If the current entering the terminal at higher potential is i(t) = 6 + 4 cos (60? t + 10°) - 2 cos (120? t - 60°) A
find: (a) the rms value of the voltage, (b) the rms value of the current, (c) the average power absorbed by the circuit.