Other books that might interest you

• 

  The Phantom Lollipop Man

  Pamela Butchart

  • 0
  • 0
  • 0

  Izzy and her friends are shocked when they find their lollipop man has disappeared! Maisie thinks he's gone to Rome but if that's true, why do they keep seeing a weird white wispy cloud around the school? And why do Izzy's legs feel cold even though she's got tights on? Could it be that the lollipop man is a phantom and he's come to spook them all?! Laugh-out-loud fun from Blue Peter Award winners Pamela Butchart and Thomas Flintham.
  
  Read more of Izzy's adventures!
  Baby Aliens Got My Teacher
  The Spy Who Loved School Dinners
  My Headteacher Is a Vampire Rat
  To Wee Or Not To Wee!
  There's a Werewolf in my Tent
  There's a Yeti in the Playground
  The Phantom Lollipop Man
  Icarus Was Ridiculous

  Show book

• 

  Anna Casey's Place in the World

  Adrian Fogelin

  • 0
  • 0
  • 0

  How do you face life without a place to call home? Award-winning author Adrian Fogelin follows up her critically acclaimed novel Crossing Jordan with the story of a young girl’s trials and triumphs as she tries to find a home.   With warmth and humor, Fogelin has created a memorable character in Anna, who must deal with the loss of her family and adjust to living in a foster home. Feeling abandoned and alone, Anna turns to her closest companion, her explorer journal. With the help of a scrawny new friend named Eb, Anna discovers a sense of belonging . . . and her own place in the world.

  Show book

• 

  Shadow Castle - Expanded Edition

  Marian Cockrell

  • 0
  • 0
  • 0

  In the middle of a deep forest is an enchanted valley and a castle where only shadows live, shadows of kings and queens who have waited for hundreds of years for the spell cast upon them to be broken. One day, a girl named Lucy follows a little dog through a tunnel into the valley and meets the mysterious red-haired Michael, who takes her into the shadow world to meet Prince Mika and his mortal wife Gloria, their children and their children’s children, and to learn the magic that will lift the spell.   This new expanded edition contains additional chapters not published in the original 1946 edition.

  Show book

• 

  Constable & Toop

  Gareth P. Jones

  • 0
  • 0
  • 0

  “Sure to tickle the funny bone and satisfy the taste for some gruesome adventure while appealing to both girls and boys. A fun read.” —School Library Journal 
   
  Something mysterious and terrible is happening throughout Victorian London: Ghosts are disap­pearing. When this reaches the attention of the Ghost Bureau, the diligent but clueless Mr. Lapsewood, a paranormal paper-pusher, is sent to investigate, and what he discovers is grave. The Black Rot has arrived—a voracious spiritual infestation whereby empty haunted houses suck in unsuspecting ghosts and imprison them. Lapsewood’s investigation weaves through the stories of several other memorable characters—living and dead—including an undertaker’s son who can see ghosts, a serial throat-slasher reminiscent of Jack the Ripper, an evangelical exorcist, and many more. The living and dead must work together if they hope to destroy the Black Rot—before it destroys both the ghost and human worlds.  
   
  “Jones has crafted a menacing, spooky Victorian London full of criminals and unfinished business, which is well balanced by the biting satire and buffoonery of the Bureau. Add to that a cast of fascinating, well-wrought characters—from the smarmy and threatening Jack, to the precocious, pot-stirring aspiring journalist Clara—and it’s a winning combination of macabre atmosphere, whimsical antics, and heartfelt, earnest friendship.” —Booklist (starred review)

  Show book

• 

  Circle of Heroes

  Adam Jay Epstein, Andrew Jacobson

  • 0
  • 0
  • 0

  Three animal familiars continue their quest to defeat an evil hare in this enchanting entry in the fantasy adventure series. Aldwyn, a street-smart alley cat, pretended he had telekinetic powers so young wizard Jack would chose him as a familiar. Aldwyn then learned that he and two other familiars—Skylar the blue jay and Gilbert the tree frog—were destined to undertake a perilous quest to defeat Paksahara, an evil hare who’d been familiar to the queen. In Circle of Heroes, the third book of The Familiars series for middle-grade readers, Paksahara and her undead animal army control the Shifting Fortress. Aldwyn and his friends must recapture it to return magic to the queendom of Vastia. Fans of The Guardians of Ga’hoole series and Erin Hunter’s Warriors books will love the mix of humor, magic, and animal adventure story in Circle of Heroes by Adam Jay Epstein and Andrew Jacobson.Praise for The FamiliarsSchool Library Journal Best BookIndie Next List Pick!“A winning combination of action and humor.” —School Library Journal (starred review)“A grand adventure with entertaining characters and magic-induced fun, written in an appropriately cinematic style.” —Publishers Weekly“The Familiars combines the magic of Harry Potter and the adventure of Warriors into an enchanting story readers will love.” —Michael Buckley, author of The Sisters Grimm and NERDS series

  Show book

• 

  Electrical Machines - Lecture...

  Dr. Hidaia Mahmood Alassouli

  • 0
  • 0
  • 0

  This book includes my lecture notes for electrical machines course. The book is divided to different learning partsPart 1- Apply basic physical concepts to explain the operation and solve problems related to electrical machines.Part 2- Explain the principles underlying the performance of three-phase electrical machines.Part 3- Analyse, operate and test three-phase induction machines.Part 4- Investigate the performance, design, operation, and testing of the three-phase synchronous machine.Part1:  Apply basic physical concepts to explain the operation and solve problems related to electrical machines.Describe the construction of simple magnetic circuits, both with and without an air gap. Explain the basic laws which govern the electrical machine operation, such as Faraday's Law, Ampere-Biot-Savart's Law, and Lenz's Law. Apply Faraday's Law of electromagnetic induction, Ampere-Biot-Savart's Law, and Lenz's Law to solve for induced voltage and currents in relation to simple magnetic circuits with movable parts. Illustrate the principle of the electromechanical energy conversion in magnetic circuits with movable parts.Part 2: Explain the principles underlying the performance of three-phase electrical machines. Compare and contrast concentric and distributed windings in three-phase electrical machines. Identify the advantages of distributed windings applied to three-phase machines. Explain how the pulsating and rotating magnetic fields are produced in distributed windings. Calculate the synchronous speed of a machine based on its number of poles and frequency of the supply. Describe the process of torque production in multi-phase machines.Part 3: Analyse, operate and test three-phase induction machines. Calculate the slip of an induction machine given the operating and synchronous speeds. Calculate and compare between different torques of a three-phase induction machine, such as the locked rotor or starting torque, pull-up torque, breakdown torque, full-load torque or braking torque. Develop and manipulate the equivalent circuit model for the three-phase induction machine. Analyse, and test experimentally, the torque-speed and current-speed characteristics of induction machines. and discuss the effects of varying such motor parameters as rotor resistance, supply voltage and supply frequency on motor torque-speed characteristics. Perform no-load and blocked rotor tests in order to determine the equivalent circuit parameters of an induction machine. Explore various techniques to start an induction motor. Identify the applications of the three-phase induction machines in industry and utility. Classify the insulations implemented in electrical machines windings and identify the factors affecting them.        Part4. Investigate the performance, design, operation, and testing of the three-phase synchronous machine. Describe the construction of three-phase synchronous machines, particularly the rotor, stator windings and the rotor saliency. Develop and manipulate an equivalent circuit model for the three-phase synchronous machine. Sketch the phasor diagram of a non-salient poles synchronous machine operating at various modes operation, such as no-load operation, motor operation, and generator operation. Investigate the influence of the rotor saliency on machine performance. Perform open and short circuit tests in order to determine the equivalent circuit parameters of a synchronous machine. Identify the applications of the three-phase synchronous machines in industry and utility List and explain the conditions of parallel operation of a group of synchronous generators. Evaluate the performance of the synchronous condenser and describe the power flow control between a synchronous condenser and the utility in both modes: over and under excited. Explain the principles of controlling the output voltage and frequency of a synchronous generator.

  Show book