Questions
The resistance of a starter for a 200-V, shunt motor is such that maximum starting current...

The resistance of a starter for a 200-V, shunt motor is such that maximum starting current is 30 A. When the current has decreased to 24 A, the starter arm is moved from the first to the second stud. Calculate the resistance between these two studs if the maximum current in the second stud is 34 A. The armature resistance of the motor is 0.4 Ω.

ANSWER [1.334 Ω]

In: Electrical Engineering

In a 500/250 V d.c. 3-wire system, there is a current of 2000 A on the...

In a 500/250 V d.c. 3-wire system, there is a current of 2000 A on the +ve side, 1600A on the negative side and a load of 300 kW across the outers. The loss in each balancer set is 8 kW. Calculate the current in each armature of the balancer set and total load on the main generator.

In: Electrical Engineering

Conditions at the inlet to the nozzle of a Pelton wheel are p = 700psig and V = 15mph.

Pelton Wheel Problem

Conditions at the inlet to the nozzle of a Pelton wheel are:

  • Pressure, p=700 psig
  • Velocity, V=15 mph

The jet diameter is d=7.5 in. and the nozzle loss coefficient is Knozzle=0.04. The wheel diameter is D=8 ft. At this operating condition, η=0.86. Calculate:

  1. The power output
  2. The normal operating speed
  3. The approximate runaway speed
  4. The torque at normal operating speed
  5. The approximate torque at zero speed

In: Mechanical Engineering

Debate the supply v. demand debate of guns. Should there be an effort to limit the...

Debate the supply v. demand debate of guns. Should there be an effort to limit the manufacturing of guns given the 97 million available? What is the students’ interpretation of the Second Amendment’s “right to bear arms” statement?

In: Psychology

Consider the case of Tarasoff v. Regents of the University of California to answer the following:...

Consider the case of Tarasoff v. Regents of the University of California to answer the following:

Discuss why the case is important to mental health clinicians.

Describe the violence risk assessment instruments a clinician might use to meet the requirements provided for in Tarasoff.

Discuss if a clinician should be held civilly liable for violent behavior of an inmate the clinician assessed.

In: Psychology

A 0.41 μF and a 0.65 μF capacitor are connected in series to a 15 V...

A 0.41 μF and a 0.65 μF capacitor are connected in series to a 15 V battery.

Part A] Calculate the potential difference across each capacitor.

Part B] Calculate the charge on each capacitor.

Part C] Repeat part A assuming the two capacitors are in parallel.

Part D] Repeat part B assuming the two capacitors are in parallel.

In: Physics

In the case of Kimbrell’s of Sanford, Inc. v. KPS, Inc.: a. Kimbrell’s was required to...

In the case of Kimbrell’s of Sanford, Inc. v. KPS, Inc.:

a. Kimbrell’s was required to file a financing statement to perfect it security interest.

b. Burns signed a security agreement granting Kimbrell’s a purchase money security interest in the VCR.

c. Kimbrell’s was not entitled to recover possession of the VCR when it filed its cause of action.

d. Kimbrell’s filed a financial statement to perfect its purchase money security interest in the VCR.

In: Accounting

A 14.7 μF capacitor is charged to a potential of 55.0 V and then discharged through...

A 14.7 μF capacitor is charged to a potential of 55.0 V and then discharged through a 75.0 Ω resistor.

(a) How long after discharge begins does it take for the capacitor to lose 90.0% of the following?

(i) its initial charge: _______s

(ii) its initial energy: _______s


(b) What is the current through the resistor at both times in part (a)?

(i) at tcharge: ________A

(ii) at tenergy: ________A

In: Physics

We have created an ArrayList of Person class. write a method called push that pushes all...

We have created an ArrayList of Person class. write a method called push that pushes all the people with the even length last name to the end of the ArrayList

Content of the ArrayList before push

[alex Bus, Mary Phillips, Nik Lambard, Rose Rodd, Esa khan, Jose Martinex, Nik Patte]

content of the ArrayList after the push method
[alex Bus, Nik Lambard, Nik Patte, Mary Phillips, Rose Rodd, Esa khan, Jose Martinex]

import java.util.*;
class Person
{
   private String name;
   private String last;
   public Person(String name, String last)
   {
     this.name = name;
     this.last = last;
   }
   public String getLast()
   {
     return last;
   }
   public String getFirst()
   {
     return name;
   }
   public String toString()
   {
     return name + " " + last;
   }
}

public class ArrayList
{
  public static void main(String[] args)
  {
    ArrayList<Person> list = new ArrayList<Person>();
     list.add(new Person ("alex","Bus"));
     list.add(new Person("Mary", "Phillips"));
     list.add(new Person("Nik", "Lambard") );
     list.add(new Person("Rose","Rodd"));
     list.add(new Person("Esa","khan"));
     list.add(new Person("Jose","Martinex"));
     list.add(new Person("Nik","Patte"));
     System.out.println(list);
     push(list);
     System.out.println(list);

  
  }
//this method pushes all the people with the even length last name to the end of the list
 public static void push(ArrayList<Person> list) {
         
 }
     
   
}

In: Computer Science

Create a table with name “S_YOURStudentID” with the following fields with required constraints. Screenshots are to...

  1. Create a table with name “S_YOURStudentID” with the following fields with required constraints. Screenshots are to be attached.                                                                                              

For example, if your botho student id is 1212121, your table name should be “S_1212121”.                                  

  1. Student id
  2. Student Name
  3. Age
  4. Gender
  5. City
  6. Course name
  7. Module Name
  8. Internal mark 1
  9. Internal mark 2
  10. Internal mark 3
  11. Total internal mark
  1. Insert minimum 10 records/rows to the table. Input the data based on Question 5. Screenshots are to be attached.                                                                                                                             
  2. Create two users and assign different default and temporary table spaces. Screenshots are to be attached for each step.                                                                                                             
  3. Create two roles named admin and user. Admin has the full privileges to access the table and user has only the READ privileges to the table. Screenshots are to be attached for each step.            
  4. Write a SQL query for the following scenario. Screenshots with queries and outputs are to be attached
  1. Write a Query in SQL to list all the students.
  2. Write a Query in SQL to list all the name of students of six characters long and name starts with ‘A’ and ends with ‘S’
  3. Write a Query in SQL to display all the information of the students together with the Total Internal mark.
  4. Write a Query in SQL to list the students whose gender is ‘male’ and the age is above 25.
  5. Write a Query in SQL to list the students whose total internal mark is greater than 80.

In: Computer Science