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Anit [1.1K]
3 years ago
6

Advatages and disadvantages of power-concentrated train​

Computers and Technology
1 answer:
allochka39001 [22]3 years ago
5 0

Answer:

1. Safety:

2. Cheap:

3. Increases Employment:

4. Bulk Quantity:

The Disadvantages of Rail Transport are as Follows:

1. Loss of Goods:

2. Unsafe for Fragile Items:

3. Late Bookings:

4. Unsuitable for Short Distances:

5. Unsuitable for Rural Areas:

Explanation:1. Safety:

Transportation by the means of railway ensures safety for the desired goods because unlike the road transports a train only stops at a desired station instead of the will of the driver. In case of road transports for example, the drivers can at any point of time decide to rest or stop for tea, refreshments, lunch or dinner.

2. Cheap:

Railway transport any day is cheaper as compared to air transport. As a matter of fact, railway transport is even cheaper than road transport because of the reason that goods in bulk quantities are carried from a desired destination to the other. In cases of road transport for instance, less goods as compared to road transport can be carried.

3. Increases Employment:

Railway transport helps people to carry cheap products from a place to another and sell them at high prices. As a result of this, a number of people who are unemployed find a source of their daily bread.

4. Bulk Quantity:

ADVERTISEMENTS:

Because railway transportation is cheaper as compared to air and road transport, goods can be carried in bulk quantities as a result of which a lot of time is saved.

It is true that as compared to air transport and road transport, rail transport is easier and cheaper but still it has a few disadvantages.

The Disadvantages of Rail Transport are as Follows:

1. Loss of Goods:

Because goods in bulk quantities are carried chances of goods getting lost are high in case of railway transport as compared to air and road transport.

2. Unsafe for Fragile Items:

Railway transportation is particularly unsafe for carrying fragile items like glass because these items can easily break at times when a train halts unexpectedly of when the train is speeding up at times.

3. Late Bookings:

ADVERTISEMENTS:

Because railway is the cheapest medium of transport, it is hard to find suitable bookings for the transportation of your goods. Railway transport is not suitable in cases of emergency.

4. Unsuitable for Short Distances:

Railway transport is unsuitable for carrying goods at shorter distances; road transport is most suitable in this case.

5. Unsuitable for Rural Areas:

Proper railway system is not build up in the Indian villages as a result of which railway transport is unsuitable in the villages of India. Whatever be the disadvantages of railway transport it was, it is and it will always be the safest and the best means for the transportation of goods.

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Given that a function receives three parameters a, b, c, of type double, write some code, to be included as part of the function
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Answer:

The function, having three double parameters, for the given scenario in c++ is given below.

void calc(double a, double b, double c)

{

   double res, s;

   s = b*b;

   res = s - (4*a*c);

   if(res < 0)

       cout << "no real solutions" << endl;

}

Explanation:

A function is declared as follows.

return-type function-name (parameter1, parameter2, … )

1. The return-type can be void or any other data type in c++ language. Void indicates that the function does not returns anything. Other data types indicate that the function returns a value of that particular data type.

2. Here, the return type is taken as void since question does not asks to return any value from the function.

3. The function-name is the name of the function. The naming conventions are similar to those defined for variables in c++.

4. The brackets following the function-name consists of the parameters. The parameters are optional and the bracket can be empty.

5. The parameters are declared in the same way as the normal variables.

The function executes as explained.

1. The function calc() receives three double parameters a, b and c.

2. No user input is taken inside the function.

3. Two additional variables are declared which are used as given below. These variables are also declared as double.

4. Square of value in variable b is stored in the variable, s.

5. The final value of the expression, s - 4ac (equivalent to b squared – 4ac), is stored in the variable, res.

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4 0
3 years ago
This is a program that calculates information about orders of shirts and pants. All orders have a quantity and a color. Write a
LuckyWell [14K]

Answer:

Check the explanation

Explanation:

// Clothing.java

public class Clothing {

//Declaring instance variables

private int quantity;

private String color;

//Zero argumented constructor

public Clothing() {

this.quantity = 0;

this.color = "";

}

//Parameterized constructor

public Clothing(int quantity, String color) {

this.quantity = quantity;

this.color = color;

}

// getters and setters

public int getQuantity() {

return quantity;

}

public void setQuantity(int quantity) {

this.quantity = quantity;

}

public String getColor() {

return color;

}

public void setColor(String color) {

this.color = color;

}

public double calculatePrice()

{

return 0.0;

}

}

_____________________________

// Pants.java

public class Pants extends Clothing {

//Declaring instance variables

private int waist;

private int inseam;

//Zero argumented constructor

public Pants() {

this.waist = 0;

this.inseam = 0;

}

//Parameterized constructor

public Pants(int quantity, String color, int waist, int inseam) {

super(quantity, color);

setWaist(waist);

setInseam(inseam);

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// getters and setters

public int getWaist() {

return waist;

}

public void setWaist(int waist) {

if (waist > 0)

this.waist = waist;

}

public int getInseam() {

return inseam;

}

public void setInseam(int inseam) {

if (inseam > 0)

this.inseam = inseam;

}

public double calculatePrice() {

double tot = 0;

if (waist > 48 || inseam > 36) {

tot = 65.50;

} else {

tot = 50.0;

}

return tot;

}

}

__________________________

// Shirt.java

public class Shirt extends Clothing {

//Declaring instance variables

private String size;

//Zero argumented constructor

public Shirt() {

this.size = "";

}

//Parameterized constructor

public Shirt(int quantity, String color, String size) {

super(quantity, color);

this.size = size;

}

// getters and setters

public String getSize() {

return size;

}

public void setSize(String size) {

this.size = size;

}

public double calculatePrice() {

double tot = 0;

if (size.equalsIgnoreCase("S")) {

tot = getQuantity() * 11.00;

} else if (size.equalsIgnoreCase("M")) {

tot = getQuantity() * 12.50;

} else if (size.equalsIgnoreCase("L")) {

tot = getQuantity() * 15.00;

} else if (size.equalsIgnoreCase("XL")) {

tot = getQuantity() * 16.50;

} else if (size.equalsIgnoreCase("XXL")) {

tot = getQuantity() * 18.50;

}

return tot;

}

}

___________________________

//Test.java

import java.util.ArrayList;

public class Test {

public static void main(String[] args) {

int totShirts=0,totPants=0;

double sprice=0,pprice=0,totWaist=0,totinseam=0,avgWaist=0,avginseam=0;

int cnt=0;

ArrayList<Clothing> clothes=new ArrayList<Clothing>();

Shirt s=new Shirt(8,"Green","XXL");

Pants p1=new Pants(6,"Brown",48,30);

Pants p2=new Pants(4,"Blue",36,34);

clothes.add(s);

clothes.add(p1);

clothes.add(p2);

for(int i=0;i<clothes.size();i++)

{

if(clothes.get(i) instanceof Shirt)

{

Shirt s1=(Shirt)clothes.get(i);

totShirts+=s1.getQuantity();

sprice+=s1.calculatePrice();

}

else if(clothes.get(i) instanceof Pants)

{

Pants pa=(Pants)clothes.get(i);

totPants+=pa.getQuantity();

pprice+=pa.calculatePrice();

totinseam+=pa.getInseam();

totWaist+=pa.getWaist();

cnt++;

}

}

System.out.println("Total number of shirts :"+totShirts);

System.out.println("Total price of Shirts :"+sprice);

System.out.println("Total number of Pants :"+totPants);

System.out.println("Total price of Pants :"+pprice);

System.out.printf("Average waist size is :%.1f\n",totWaist/cnt);

System.out.printf("Average inseam length is :%.1f\n",totinseam/cnt);

 

}

}

_________________________

Output:

Total number of shirts :8

Total price of Shirts :148.0

Total number of Pants :10

Total price of Pants :100.0

Average waist size is :42.0

Average inseam length is :32.0

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