Engineers Day Quize Shift 2

Water has a neutral pH level of 7. This means that it is neither acidic (pH less than 7) nor alkaline/basic (pH greater than 7). A pH of 7 indicates a balance of hydrogen ions (H+) and hydroxide ions (OH-) in the water, making it neither more acidic nor more alkaline.

Alexander Fleming is the correct answer because he is widely credited with the discovery of penicillin. In 1928, Fleming noticed that a mold called Penicillium notatum had killed bacteria in a petri dish. This accidental discovery led to the development of the first antibiotic, which revolutionized medicine by effectively treating bacterial infections. Albert Einstein was a renowned physicist known for his theory of relativity, while Thomas Edison was an inventor known for his contributions to the development of the electric light bulb and phonograph.

Hawa Mahal is the correct answer because it is a famous monument located in Jaipur, Rajasthan, India. Also known as the "Palace of Winds," it is a stunning five-story palace made of red and pink sandstone. The unique feature of this monument is its 953 small windows, called jharokhas, which were designed to allow the royal ladies to observe the street festivals and daily life without being seen. Hawa Mahal is a popular tourist attraction and a significant architectural marvel in Jaipur.

The correct answer is html, head, title, body. These four tags are essential in creating web pages. The html tag is the root element of an HTML page, while the head tag contains meta-information about the document such as the title. The title tag specifies the title of the webpage that appears in the browser's title bar. Lastly, the body tag defines the main content of the webpage.

When liquid nitrogen comes into contact with oxygen, it rapidly evaporates and turns into a gas. This is because liquid nitrogen has an extremely low boiling point of -196 degrees Celsius (-321 degrees Fahrenheit), while oxygen has a boiling point of -183 degrees Celsius (-297 degrees Fahrenheit). Therefore, the higher temperature of oxygen causes the liquid nitrogen to rapidly vaporize and transform into a gas state.

In our houses, we find parallel circuits. This is because parallel circuits allow multiple appliances and devices to be connected to the same power source independently. In a parallel circuit, each device has its own separate path for the flow of electric current, ensuring that if one device fails or is disconnected, the others will continue to function. This arrangement is ideal for homes as it provides flexibility and convenience in powering various electrical appliances simultaneously.

The given answer, "parenthesis," is correct because all methods must have parentheses. Parentheses are used in programming to enclose the arguments or parameters that are passed to a method. They are essential for indicating where the method begins and ends, and they help to separate the method from other elements in the code. Without parentheses, a method would not be properly defined or called, and the code would not execute correctly. Therefore, parentheses are a necessary component of any method in programming.

Dies are not used to cut threads on a workpiece. Dies are actually used to create threads on a workpiece by removing material in a process called threading. Dies are typically used in conjunction with a threading tool or tap to create threads on a workpiece. Therefore, the correct answer is False.

When an atom or molecule is split, it releases a tremendous amount of energy in the form of an explosion. This process is known as nuclear fission, and it is used in the creation of atomic bombs. By splitting the nucleus of an atom, the bomb releases a massive amount of energy, causing destruction and devastation. Therefore, the statement that a bomb is made when you split an atom or molecule is true.

EPROM stands for Erasable Programmable Read-Only Memory. It is a type of memory chip that can be erased and reprogrammed multiple times using ultraviolet light. Unlike ROM (Read-Only Memory), EPROM is not permanently programmed during manufacturing and can be modified by the user. This makes EPROM a versatile and flexible memory option for storing and retrieving data in electronic devices.

The correct declaration of an integer named i is "int i;". This statement declares a variable named i of type int, which means it can store whole numbers. The other options are incorrect because they either assign a value to the variable without declaring it or declare the variable with incorrect syntax.

When an atom or molecule is split, it releases a tremendous amount of energy in the form of an explosion. This process is known as nuclear fission, and it is the principle behind the creation of atomic bombs. By splitting the nucleus of an atom, the energy stored within the nucleus is released, causing a chain reaction that leads to a powerful explosion. Therefore, it is correct to say that a bomb is made when you split an atom or molecule.

An interpreter is a program that translates and executes instructions written in a high-level programming language directly into machine code or bytecode without the need for a separate compilation step. It reads the source code line by line and translates each line into machine code or bytecode, executing it immediately. Therefore, the interpreter acts as a language translator, converting the high-level language instructions into a format that the computer can understand and execute.

The extension "exe" is commonly used for computer applications. This file extension is short for "executable," indicating that the file contains a program or application that can be run on a computer. Executable files are often used in Windows operating systems to launch software applications. Therefore, "exe" is the correct answer for the extension of computer applications.

When relocating a large office space using numerous cables, several factors should be considered. The size of the new location is important to ensure that it can accommodate all the necessary equipment and cables. The raised flooring is also crucial as it provides a space for the cables to be neatly organized and hidden, reducing the risk of tripping hazards and damage. Additionally, the height of the ceiling is important to ensure that there is enough clearance for the cables to be properly installed. Lastly, the availability of power points is essential to ensure that all the equipment can be properly powered. Therefore, all of the above factors should be considered when relocating a large office space with numerous cables.

A flat chisel is used for general chiseling purposes. It has a flat cutting edge that allows for smooth and even removal of material. This type of chisel is versatile and can be used for various woodworking and metalworking tasks, such as shaping, carving, and cutting. The flat shape of the chisel provides stability and control, making it suitable for a wide range of applications.

A memory circuit with 9 address inputs can have a maximum of 2^9 = 512 storage locations. Each address input can be either 0 or 1, so there are 2 options for each input. By multiplying these options together, we get the total number of storage locations. Therefore, the correct answer is c. 512.

Conductors have more free electrons compared to other materials. Free electrons are the loosely bound electrons that are not attached to any specific atom and are able to move freely within the material. Conductors, such as metals, have a large number of free electrons, which allows them to easily conduct electricity. In contrast, insulators, dielectrics, and materials like mica have very few free electrons, making them poor conductors of electricity.

A shielded cable is an electric cable that is enclosed within a metallic sheath. This metallic sheath acts as a barrier and helps to reduce the effects of external electric or magnetic fields. It provides protection against interference and ensures that the signals transmitted through the cable are not distorted or affected by external factors. Shielded cables are commonly used in applications where there is a need for reliable and high-quality signal transmission, such as in telecommunications, computer networks, and audio/video systems.

Karnataka is the correct answer because it is the largest producer of raw silk in India. The state has a conducive climate and suitable conditions for silk production, which has led to its prominence in the industry. Karnataka's sericulture sector is well-developed and accounts for a significant share of the country's raw silk production. The state's expertise in silk production has made it a major contributor to India's silk exports and has helped in establishing its reputation as the largest producer of raw silk in the country.

Adobe absorbed Macromedia.

The correct answer is femur. The femur is the medical term for the thigh bone. It is the longest and strongest bone in the human body, and it connects the hip bone to the knee joint. The femur plays a crucial role in supporting the body's weight and facilitating movement.

Wind has energy because it can do work. When wind moves, it possesses kinetic energy which can be harnessed to perform tasks like turning wind turbines to generate electricity or powering sailboats. Wind energy is a renewable and sustainable source of power that can be converted into various forms of work, making it a valuable resource for human use.

The correct answer is true because using the hacksaw at a rate of 40 - 50 strokes per minute is considered to be the optimal speed for efficient cutting. This speed allows for better control and accuracy while reducing the risk of the blade getting stuck or breaking. It also helps to maintain a steady cutting rhythm and prevents unnecessary strain on the user's arm and hand muscles.

Piyush Goyal is the correct answer because he is the current Minister of Railways in India. Suresh Prabhu was the Minister of Railways from 2014 to 2017, but he has been replaced by Piyush Goyal. Venkaiah Naidu and Nitin Gadkari are not related to the Ministry of Railways.

The correct answer is 2500km. The Himalayas span a distance of approximately 2500km.

When you move, your brain sends out electrical signals to control the muscles and coordinate the movement. These electrical signals are commonly referred to as impulses. Impulses are the rapid transmission of electrical charges along the nerve cells, allowing for communication between different parts of the body. Therefore, impulses are the correct term to describe the electrical signals used by the brain during movement.

A helical gear is a type of gear that has teeth that are cut at an angle, forming a helix shape. This design allows for a smoother and quieter operation compared to other types of gears. The angled teeth also provide a higher load-carrying capacity and better efficiency. Helical gears are commonly used in various applications, including automotive transmissions, industrial machinery, and power tools.

A sector is a term used to refer to a segment of a track in a mass storage system. It is a division of the track that allows for the storage of data. Sectors are typically used in hard drives and other storage devices to organize and store data in a structured manner. Each sector has a fixed size and is typically accessed and read individually.

The correct answer for the full form of VIRUS is "vital information resource under siege". This acronym accurately represents the nature of a computer virus, which infiltrates and attacks a system's vital information, putting it under siege.

Tim Cook is the correct answer because he is a well-known personality in the tech industry. He is the CEO of Apple Inc. and has been leading the company since 2011, following the resignation of Steve Jobs. Cook has played a significant role in the growth and success of Apple, overseeing the launch of new products and services such as the iPhone, iPad, and Apple Watch. He is also known for his advocacy on privacy and environmental issues.

Lenz's law states that the direction of an induced voltage or electromotive force (emf) in a circuit is always such that it opposes the change that caused it. In other words, when there is a change in the magnetic field through a circuit, Lenz's law determines the direction of the induced voltage to create a magnetic field that opposes the change. This law is based on the principle of conservation of energy and is used to explain phenomena such as electromagnetic induction and the behavior of transformers and electric motors.

Ductility is the property of a metal to be drawn into fine wires. This means that a ductile metal can be easily stretched and shaped into a thin wire without breaking or losing its strength. Ductility is an important characteristic for metals used in electrical wiring or any application that requires the metal to be formed into long, thin shapes. Annealing is a heat treatment process to improve the metal's properties, malleability refers to the ability to be shaped without breaking, and softness refers to the metal's hardness or resistance to deformation.

All elements of a structure are by default public. This means that they can be accessed from outside the structure and can be modified directly.

Phillips screwdrivers are not known as standard screwdrivers. Standard screwdrivers have a flat tip, while Phillips screwdrivers have a cross-shaped tip. They are two different types of screwdrivers used for different types of screws. Therefore, the correct answer is False.

When something burns, a chemical reaction occurs in which the bonds between atoms are broken and new bonds are formed. This release of energy in the form of heat is known as a chemical reaction. Therefore, the energy transformation that takes place when something burns is from chemical energy to thermal energy.

Smriti Irani is the correct answer for the Minister of Textiles in India. She was appointed as the Minister of Textiles in May 2014 and has been serving in this position since then. Smriti Irani is a prominent Indian politician and member of the Bharatiya Janata Party (BJP). She has been actively involved in various initiatives and policies related to the textile industry in India. Her appointment as the Minister of Textiles reflects her expertise and experience in this field.

The pitch of a thread is not measured perpendicular to the axes of the thread. Instead, it is measured parallel to the axes of the thread. This is because the pitch represents the distance between corresponding points on adjacent threads, and measuring it perpendicular to the axes would not accurately determine this distance.

Unicode is the correct answer because it is a means of encoding text in which each symbol is represented by 16 bits. Unicode is a universal character encoding standard that aims to support all the characters from all the writing systems in the world. It provides a unique number for every character, regardless of the platform, program, or language. This allows for the representation of a wide range of characters, including those from different languages, symbols, emojis, and special characters, making it a versatile and comprehensive encoding system for text.

An armored cable is an electric cable that is protected by a flexible, helically wound metal wrapping. This metal wrapping provides additional protection to the insulated conductors inside the cable, making it more resistant to physical damage and external factors such as moisture or rodents. Armored cables are commonly used in industrial and commercial applications where durability and protection are important. It is also known as BX cable.

The correct answer is Machinist vise. This is because all the other options listed - V-block and clamp, Drill vise, and Angle plate - are commonly used work holding devices on a drill press. However, a Machinist vise is not typically used on a drill press. It is more commonly used on a milling machine or a bench grinder.

Degaussing is the process of demagnetizing an object by applying an alternating current (AC) field and gradually reducing it to zero. This process is commonly used to remove or reduce unwanted magnetic fields in objects such as computer monitors, televisions, and magnetic storage media. By demagnetizing properly, the magnetic field of the object is neutralized, ensuring that it does not interfere with other magnetic devices or cause data corruption. Therefore, the correct answer is c. Degaussing.

A defibrillator is used to restart the heart when it stops by delivering an electric shock to the chest. It is an emergency medical device that is commonly used in hospitals, ambulances, and other medical settings. A pacemaker, on the other hand, is used to regulate the heartbeat in individuals with irregular heart rhythms, but it cannot restart a stopped heart. Therefore, a defibrillator is the correct answer in this case.

A feeder is a group of electric conductors that originate at a main distribution center and supply one or more secondary distributions, one or more branch circuit distribution centers, or a combination of these. It is responsible for delivering electrical power from the main distribution center to various points of use within a building or facility.

The speed of light is 186,000 miles per minute. This is a well-known scientific fact and is widely accepted by the scientific community. The speed of light is a fundamental constant in physics and plays a crucial role in many scientific theories and calculations. It is the maximum speed at which information or energy can travel in the universe according to the theory of relativity.

Diamagnetic materials have permeabilities slightly less than that of free space. This means that they have a weak repulsion to magnetic fields and are slightly repelled by a magnet. Diamagnetic materials do not retain any magnetization once the external magnetic field is removed. They have no unpaired electrons and their atomic or molecular magnetic moments cancel each other out. Examples of diamagnetic materials include water, wood, and most organic compounds.

Tapping is the correct answer because it refers to the process of cutting internal threads by hand. It involves using a tap, which is a cutting tool with threads, to create threads inside a pre-drilled hole. This process is commonly used in metalworking and is essential for creating threaded holes that can be used for screws, bolts, or other fasteners. Die working, threading, and drilling are not accurate terms for this specific process.

When a conductor is exposed to a moving magnetic field, a voltage is induced in the conductor. This induced voltage is equal to the difference in charges present in the conductor. Therefore, the correct answer is b. Induced voltage.

A reference variable is an alias for another variable. It allows us to access and modify the value of the original variable using a different name. This means that any changes made to the reference variable will affect the original variable, and vice versa. In other words, a reference variable provides an alternate name for an existing variable, allowing us to work with the same data using different names.

The term "ampacity" refers to the maximum amount of electrical current that a conductor can carry without overheating. It is a measure of the conductor's ability to handle the flow of electricity without reaching its temperature limit. Therefore, ampacity is the correct answer as it directly relates to the conductor's ability to function properly without overheating.