What percentage of the world's plants are C4?

a. 10 c. 80
b. 40 d. 95


A

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If a wireless service provider has 20 cells to cover the whole service area, with each cell having 40 channels, how many users can the provider support if a blocking probability p of 2 % is required? Assume that each user makes an average of three calls per hour and the duration of each call is an average of three minutes. (Erlang B values are given in the Appendix A)

What will be an ideal response?

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The thermal efficiency is nearest:

An engine operates on a diesel cycle with a compression ratio of 20 between temperature limits of 25°C and 1400°C and an inlet pressure of 100 kPa. The power output is 500 kW.

A) 69%
B) 66%
C) 60%
D) 57%

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36 V of dc is applied to a windings ratio of 1:2. What is the secondary voltage?

A) something slightly less than 72 V since transformers do have some loss B) 144 V C) 72 V D) none of the above

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Why is an effective performance measurement system necessary?

What will be an ideal response?

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