What causes underfill in welding? Fig. Definition: The protrusion of weld metal beyond the weld toe or weld root Main Causes: (1) Too low welding amperage (2) Too slow electrode manipulation (3) Too short arc length, or too low arc voltage (4) Electrode travel and work angles are inappropriate. What causes crater cracks in welding? […]
Is Circuit sat NP-complete?
Is Circuit sat NP-complete? Proof of NP-Completeness Thus Circuit SAT belongs to complexity class NP. To show NP-hardness, it is possible to construct a reduction from 3SAT to Circuit SAT. How many conditions have to be met if an NP-complete problem is polynomially reducible? two conditions What are NP-complete problems how do you check for […]
Is a device used for measuring resistance?
Is a device used for measuring resistance? An ohmmeter is an electrical instrument that measures electrical resistance (the opposition offered by a substance to the flow of electric current) . Megohmmeters (also a trademarked device Megger) measure large values of resistance. The unit of measurement for resistance is ohms (Ω). Why do we measure resistance? […]
What are examples of assimilation and accommodation?
What are examples of assimilation and accommodation? When the child encounters a horse, they might assimilate this information and immediately call the animal a dog. The process of accommodation then allows the child to adapt the existing schema to incorporate the knowledge that some four-legged animals are horses. What are the key concepts of Piaget’s […]
What are the advantages of convenience sampling?
What are the advantages of convenience sampling? Readily available sample: Data collection is easy and accessible. Most convenience sampling considers the population at hand. Samples are readily available to the researcher. They do not have to move around too much for data collection. What are the advantages and disadvantages of convenience sampling? The key advantages […]
How is ultimate BOD calculated?
How is ultimate BOD calculated? Ultimate BOD Calculator L = BODt (1-e-kt) L = BODt (1-e-kt) L = 150 (1-e-0.23×5) What is the relationship between dissolved oxygen and biochemical oxygen demand? BOD directly affects the amount of dissolved oxygen in rivers and streams. The greater the BOD, the more rapidly oxygen is depleted in the […]
What is the dependent variable in a linear regression?
What is the dependent variable in a linear regression? Simple linear regression is a technique that is appropriate to understand the association between one independent (or predictor) variable and one continuous dependent (or outcome) variable. In regression analysis, the dependent variable is denoted Y and the independent variable is denoted X. How do you predict […]
What is tear test?
What is tear test? Tear testing provides information on the energy or force required to propagate a tear through a material. Tearing tests are commonly performed on foils, plastics, paper, and textiles. DDL has capability to perform many different types of tear tests, such as trouser tear, graves tear and the pendulum (Elmendorf) method. Why […]
What might you see if you were to go scuba diving in the ocean?
What might you see if you were to go scuba diving in the ocean? 10 Amazing Ocean Animals Only Scuba Divers Can See WHALE SHARK. The whale shark (Rhincodon typus) is a slow-moving filter-feeding carpet shark — and the biggest fish in the sea. VARIABLE NEON SLUG. Nembrotha kubaryana is also known as the variable […]
What two types of plays did the Greeks invent?
What two types of plays did the Greeks invent? There were two main types of plays that the Greeks performed: tragedies and comedies. Tragedy – Greek tragedies were very serious plays with a moral lesson. They usually told the story of a mythical hero who would eventually meet his doom because of his pride. Comedy […]