B is to 10 as 7 is to 2 setting porption

Air from a workspace enters the air conditioner unit at 30°C dry bulb and 25°C wet bulb temperatures. The air leaves the air con

PSYCHO15rus [73]

Answer:

See explaination

Explanation:

The volume flow rate Q Q QQ of a fluid is defined to be the volume of fluid that is passing through a given cross sectional area per unit time.

Kindly check attachment for the step by step solution of the given problem.

4 0

3 years ago

The pump of a water distribution system is powered by a 15-kW electric motor whose efficiency is 90 percent. The water flow rate

wariber [46]

Answer:

Mechanical power of pump is 74.07%.

Explanation:

Power of motor = 15 KW

Efficiency of motor= 90%

So the actual power(P) supplied by motor = 0.9 x 15 KW

P=13.5 KW

Water flow rate = 50 L/s

Volume flow rate = 50 L/s

We know that

$1000\ L/s=1\ m^3/s$

So

$Volume\ flow \rate =0.05\ m^3/s$

We know that pump is an open system and work input for open system can be calculated as

W=VΔP

ΔP is the pressure difference

V is the volume flow rate

So by putting the values

W=0.05 (300-100) (here ΔP=300 - 100=200 KPa)

W=10 KW

So mechanical power of pump

$\eta =\dfrac{W}{P}$

$\eta =\dfrac{10}{13.5}$

η =0.7407

Mechanical power of pump is 74.07%.

6 0

3 years ago

You will create three classes, the first two being Student and LineAtOfficeHour. The instances of the first class defines a sing

White raven [17]

Answer:

Complete solution is given below:

Explanation:

//student class

class Student{

private String firstname,lastname;

//constructor

Student(String first,String last){

this.firstname=first;

this.lastname=last;

}

//getters and setters

public String getFirstname() {

return firstname;

}

public void setFirstname(String firstname) {

this.firstname = firstname;

}

public String getLastname() {

return lastname;

}

public void setLastname(String lastname) {

this.lastname = lastname;

}

//function to get the fullname of student

public String fullName() {

return this.firstname+" "+this.lastname;

}

//class for line at office hour

class LineAtOfficeHour{

private Student line[];

private int N=0;

private int back=0;

//empty constructor

LineAtOfficeHour() {

line=new Student[5];

}

//parameterized constructor

LineAtOfficeHour(Student st[]) {

int i=0;

line=new Student[5];

while(i<st.length && i<5) {

line[i]=st[i];

i++;

}

this.N=i;

this.back=i-1;

}

//function to check if line is empty or not

public boolean isEmpty() {

if(this.N==0)

return true;

else

return false;

}

//function to check if line is full

public boolean isFull() {

if(this.N==5) {

return true;

}else

return false;

}

///function to get the size of line

public int size() {

return this.N;

}

//function to add a student to the line

public void enterLine(Student s) {

if(isFull())

System.out.println("Line is full!!!!");

else {

line[++back]=s;

this.N++;

}

public Student seeTeacher() {

Student result=null;

if(this.N>=0) {

result=line[0];

int i=0;

for(i=1;i<N;i++) {

line[i-1]=line[i];

}

line[i-1]=null;

this.N--;

this.back--;

}

return result;

}

//function to print students in line

public String whosInLine() {

String result ="";

for(int i=0;i<this.N;i++) {

result+=line[i].fullName()+",";

}

return result;

}

//driver method

public class TestLine {

public static void main(String[] args) {

LineAtOfficeHour list=new LineAtOfficeHour();

if(list.isEmpty()) {

System.out.println("Line is empty!!!!!!!!!");

}

Student s1[]=new Student[3];

s1[0]=new Student("John","Smith");

s1[1]=new Student("Sam","Zung");

s1[2]=new Student("Peter","Louis");

list=new LineAtOfficeHour(s1);

if(list.isEmpty()) {

System.out.println("Line is empty!!!!!!!!!");

}else {

System.out.println("Line is not empty.........");

}

System.out.println("Students in line: "+list.whosInLine());

System.out.println("Student removed: "+list.seeTeacher().fullName());

System.out.println("Students in line: "+list.whosInLine());

}

6 0

4 years ago

By the mid-1980s, the prices of economy cars had risen substantially, with the smaller Japanese and American sedans costing five

mash [69]

Answer:

Cause and effect

Explanation:

In this text, the most suitable structure is a cause and effect structure. The text explains why the prices of economy cars rose substantially in the United States during the mid-1980s. The initial cause was import quotas, which led to the effect of the Japanese sending mostly luxury cars to America. This pattern is reproduced through the passage, allowing us to understand the connection between different sentences within a paragraph.

7 0

3 years ago

What is the definition of a duty cycle?

ira [324]

Answer:

$D=\frac{PW}{T}*100$

Explanation:

In electrical terms, is the ratio of time in which a load or circuit is ON compared to the time in which the load or circuit is OFF.

The duty cycle or power cycle, is expressed as a percentage of the activation time. For example, a 70% duty cycle is a signal that 70% of the time is activated and the other 30% disabled. Its equation can be expressed as:

$D=\frac{PW}{T}*100$

Where:

$D=Duty\hspace{3}Cycle$

$PW=Pulse\hspace{3}Active\hspace{3}Time$

$T=Period\hspace{3}of\hspace{3}the\hspace{3}Signal$

Here is a picture that will help you understand these concepts.

5 0

3 years ago