An air-standard dual cycle operates with a compression ratio of 15:1. At the beginning of compression the conditions are 17 °C, 0.95 bar, and 3.80 L. The amount of heat added is 6.3 kJ, of which one-third is added at constant volume and the remainder at constant pressure. Determine Match each item to a choice: the thermal efficiency the temperature before the constant-pressure heat- addition process, in degrees Kelvin, the temperature after the constant-pressure heat- addition process the temperature after isentropic expansion, the pressure after the constant-volume heat-addition process,

An air-standard dual cycle operates with a compression ratio of 15:1. At the beginning of compression the conditions are 17 °C, 0.95 bar, and 3.80 L. The amount of heat added is 6.3 kJ, of which one-third is added at constant volume and the remainder at constant pressure. Determine Match each item to a choice: the thermal efficiency the temperature before the constant-pressure heat- addition process, in degrees Kelvin, the temperature after the constant-pressure heat- addition process the temperature after isentropic expansion, the pressure after the constant-volume heat-addition process,

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

IC engines

The term "engine" indicates a mechanical device/machine used to convert input energy to a specific mechanical output. The input energy may be in the form of chemical energy, thermal energy, or so on and mechanical output is in the form of mechanical energy (work done). Generally, the engines classify into two groups which are internal combustion type and external combustion type, and further, these two types can be classified into two types that are reciprocating and rotary engines.

Question

An air-standard dual cycle operates with a compression ratio of 15:1. At the beginning of compression the conditions are 17 °C,
0.95 bar, and 3.80 L. The amount of heat added is 6.3 kJ, of which one-third is added at constant volume and the remainder at
constant pressure. Determine
Match each item to a choice:
the thermal efficiency
the temperature before the constant-pressure heat-
addition process, in degrees Kelvin,
the temperature after the constant-pressure heat-
addition process
the temperature after isentropic expansion,
the pressure after the constant-volume heat-addition
process,

Choices:
: 75.204 bar
: 856.71 K
: 1530.47 K
E 63.60%
: 64.57%
: 42.097 bar
: 1025.66 K
: none of these
: 2492.83 K
: 933.24 K

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