Module 3 Chapter 13 Quiz 1

}, { "question": " When both alternating quantities of the same frequency pass through corresponding points in a cycle at the same instant of time they are said to be .......... with each other", "choices": ["In phase", "Out of phase", "Omni directional"], "correct": "In phase" }, { "question": " This is the term used to describe a value of voltage or current at any one instant", "choices": ["Effective value", "Instantaneous value", "Average value"], "correct": "Instantaneous value" }, { "question": "The average value of an alternating current or voltage is the average of all the instantaneous values during", "choices": ["Two half cycles", "One full cycle", "One half cycle"], "correct": "One half cycle" }, { "question": " The most common method of specifying the amount of a sine wave of voltage or current is by relating it to .......... voltage and current that will produce the same heating effect", "choices": ["DC ", "AC", "Pulsating DC"], "correct": "DC " }, { "question": " .......... is the difference between the maximum positive and the maximum negative amplitudes of a waveform", "choices": ["Effective value", "Average value", "Peak to peak"], "correct": "Peak to peak" }, { "question": " The power dissipated in an .......... is the average value of all the instantaneous values of power for a complete cycle", "choices": ["DC circuit", "Ac circuit", "Open loop circuit"], "correct": "Ac circuit" }, { "question": " To find the instantaneous power at any moment, the instantaneous values of voltage and current at that moment are together", "choices": ["Divided ", "Added ", "Multiplied "], "correct": "Multiplied " }, { "question": " The average power is half the peak power value in a", "choices": ["Resistive circuit", "Parallel circuit", "Series circuit"], "correct": "Resistive circuit" }]; // 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);