112-2 熱工

112-2 熱工

University

35 Qs

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112-1熱工

112-1熱工

University

35 Qs

112-2 熱工

112-2 熱工

Assessment

Quiz

Specialty

University

Easy

Created by

雯華林 雯華林

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35 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

熱機之熱效率定義為:

(A) 所作的功與所加入之電能的比值

 (B) 所作的功與所加入之熱能的比值

(C) 所作的功與所加入之燃料質量的比值

(D) 所產生之電能與所加用之熱的比值

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

某一氣體的壓力(P)與體積(V)的關係式為PVn=常數,則當n=Cp0/Cv0(此氣體定壓比熱/此氣體定容比熱),則此氣體在什麼的狀態過程:

(A)等壓過程

(B)等溫過程

(C)等熵過程

(D)等容過程

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在冷媒特性曲線圖中之飽和區域,冷媒的形態為:

(A)氣態

(B)液態

(C)液氣混合態

(D)固態

Answer explanation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

標準狀態下(0°C, 1大氣壓)體積為1m3之理想氣體壓縮為30°C,30大氣壓之狀態,則其體積變為

(A)0.027 m3

(B)0.037 m3

(C)0.047 m3

(D)0.057 m3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

問目前市面上的轎車內之冷氣系統所使用的冷媒為:

(A)HFC-407C

(B)HFC-410A

(C)HFC-134A

(D)HFC-134a

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

試問一般壓縮機所需之功,可用下列壓縮過程壓力(P)及體積(v)之變化估算

(A) ∫ Pdv

(B) ∫ vdP

(C) ∫ dP/v

(D) ∫ dv/P

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

有一台空氣壓縮機,其壓力P及比容v之變化,約可用Pv1.4=常數表示,其試問此過程為

(A)等溫過程

(B)等壓過程

(C)等容過程

(D)等熵過程

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