Module 3 Chapter 15 Quiz 1

}, { "question": " ......... is the voltage measured between any two lines in a three-phase circuit", "choices": ["Line current", "Phase voltage", "Line voltage"], "correct": "Line voltage" }, { "question": " To reduce ----------, cores are made of lamination coated with an insulation", "choices": ["Copper losses", "Eddy current losses", "Hysteresis losses"], "correct": "Eddy current losses" }, { "question": " If a transformer steps up the voltage, it will ---------- the current by the same ratio", "choices": ["Step down", "Step up", "short circuit"], "correct": "Step down" }, { "question": " A transformer is said to be on NO LOAD when its secondary side winding is", "choices": ["Close circuited", "Open circuited", "Parallel wired"], "correct": "Open circuited" }, { "question": " In voltage transformers, the primary coils are connected in ---------- across the supply voltage", "choices": ["Series parallel", "Parallel ", "Series "], "correct": "Parallel " }, { "question": " A --------- changes electrical energy of a given voltage into electrical energy at a different voltage level", "choices": ["Rectifier ", "Transformer ", "Capacitor "], "correct": "Transformer " }, { "question": " The primary windings of -------- transformers are connected in series in the primary circuit", "choices": ["Auto ", "Voltage ", "Current "], "correct": "Current " }, { "question": "Transformer losses are solely", "choices": ["Mechanical losses", "Electrical losses", "Chemical losses"], "correct": "Electrical losses" }, { "question": " --------------- result from the electrical energy required to reverse magnetization", "choices": ["Eddy current lossess", "Copper losses", "Hysteresis losses"], "correct": "Hysteresis losses" }]; // define elements var content = $("content"), questionContainer = $("question"), choicesContainer = $("choices"), scoreContainer = $("score"), submitBtn = $("submit"); // init vars var cQarr = []; for (var i=0; i" + " " + choices[i] + "
"; } questionContainer.textContent = (currentQuestion + 1) + ". " + quiz[cQarr[currentQuestion]].question; choicesContainer.innerHTML = choicesHtml; if (currentQuestion === 0) { submitBtn.textContent = "Submit Answer"; } } function checkAnswer() { if (askingQuestion) { submitBtn.textContent = "Next Question"; askingQuestion = false; var userpick, correctIndex, radios = document.getElementsByName("quiz" + currentQuestion); for (var i = 0; i < radios.length; i++) { if (radios[i].checked) { userpick = radios[i].value; } if (radios[i].value == quiz[cQarr[currentQuestion]].correct) { correctIndex = i; } } var labelStyle = document.getElementsByTagName("label")[correctIndex].style; labelStyle.fontWeight = "bold"; if (userpick == quiz[cQarr[currentQuestion]].correct) { score++; labelStyle.color = "green"; } else { labelStyle.color = "red"; } } else { askingQuestion = true; submitBtn.textContent = "Submit Answer"; if (currentQuestion < quiz.length - 1) { currentQuestion++; askQuestion(); } else { showFinalResults(); } } } function showFinalResults() { content.innerHTML = "

Result: " + Math.round(score / quiz.length * 100) + "%

" + score + " out of " + quiz.length + "   " + "

"; } window.addEventListener("load", askQuestion, false); submitBtn.addEventListener("click", checkAnswer, false);