This question tests the understanding of the basic components and functions within a DC power supply circuit. A rectifier converts AC to pulsating DC. To obtain a steady DC output, further processing is required. We need to identify the component responsible for smoothing out these pulsations.
Correct Option: C) Filter Circuit — A filter circuit is used after a rectifier to smooth out the pulsating DC output and convert it into a steady DC level by reducing the ripple content.
The question asks to identify which option is NOT a type of filter. Filters are electronic circuits or signal processing components that selectively pass or reject certain frequency components of a signal. We need to evaluate each option based on common filter classifications.
D) frequency pass — This is not a recognized or standard type of filter. While all filters deal with passing or rejecting certain frequencies, "frequency pass" is not a specific classification like low-pass or high-pass.
To convert a binary number to its hexadecimal equivalent, we group the binary digits into sets of four, starting from the right. Each group of four binary digits then corresponds to a single hexadecimal digit. If the leftmost group has fewer than four digits, we pad it with leading zeros.
A) The binary number \(1010\) converts to decimal \(10\), which is represented as 'A' in hexadecimal.
This problem involves simplifying a Boolean expression using Boolean algebra laws. The expression \(A + A'B\) can be simplified by applying the distributive law and the complement law of Boolean algebra.
Correct Option: D) A + B
The question asks why mercury is considered a superior barometric fluid. A barometer measures atmospheric pressure by balancing the weight of a column of fluid against the atmospheric pressure. The properties of the fluid used are crucial for accurate and reliable measurements.
A) Negligible small vapour pressure. This is the primary reason why mercury is preferred. A low vapour pressure ensures that the vacuum above the mercury column is nearly perfect, leading to accurate pressure readings without significant error from the vapour itself.
The question asks about the type of pressure measured by a Bourdon gauge. Understanding the principle of operation of a Bourdon gauge will help determine the correct answer.
B) Gauge pressure — A Bourdon gauge, like most mechanical pressure gauges, measures the pressure relative to the ambient atmospheric pressure, which is precisely the definition of gauge pressure.
The question asks to identify the type of cost associated with defective products produced. This falls under the category of Quality Costs, which are typically classified into four main types: prevention costs, appraisal costs, internal failure costs, and external failure costs. Understanding the definition of each will help in identifying the correct option.
A) Internal failure — Internal failure costs are incurred when products or services fail to meet quality requirements and are detected before delivery to the customer. The costs related to defective products produced, such as rework, scrap, or re-inspection, fall under this category.
The question asks about the purpose of Simo charts. Simo charts are a tool used in motion study, a part of industrial engineering, to analyze and improve the efficiency of manual work by detailing the movements of an operator's body parts.
Correct Option: B) Operator movements
The question asks about the subject matter of hydrographic surveys. To answer this, one needs to understand the definition and purpose of hydrography.
Correct Option: A) Larger water bodies
The question asks about the composition of "metallic tapes." This term can be a bit misleading. In surveying and measurement, a common measuring tool is a tape measure. There are different types of tape measures, and one type is often referred to as a "metallic tape" or "linen tape with metallic wires." Understanding the typical construction of such tapes is key to answering this question.
Correct Option: C) Metallic tapes, in the context of surveying or general measurement, are typically made of a combination of cloth (like linen or cotton) interwoven with fine metallic wires (often brass or copper). This construction provides more durability and less stretch than a plain cloth tape, while still being flexible enough to roll up.