What are disadvantages of DC? Disadvantages of DC Transmission: Due to commutation problem, electric power can’t be produced at High (DC) Voltage. In High Voltage transmission, we cant step-up the level of DC Voltage (As Transformer won’t work on DC). There is a limitation of DC switches and circuit breakers (and they are costly too). […]
How can you reduce unwanted energy transfers in a machine with moving touching components?
How can you reduce unwanted energy transfers in a machine with moving touching components? Mechanical devices can be made more efficient through lubrication to reduce the friction between moving parts of a machine and increase the amount of useful energy transferred. Can you put too much insulation in your attic? It is possible to over-insulate […]
What is a real life example of a transverse wave?
What is a real life example of a transverse wave? Examples of transverse waves include vibrations on a string and ripples on the surface of water. We can make a horizontal transverse wave by moving the slinky vertically up and down. In a longitudinal wave the particles are displaced parallel to the direction the wave […]
Do cameras reflect or refract light?
Do cameras reflect or refract light? Yes, cameras refract light. The refraction of light happens as it travels through the lens of the camera and creates a larger or smaller picture…. How do mirrors and lenses affect the path of light rays? Summary: How do lenses and mirrors affect light? Plane mirrors and convex mirrors […]
What is Rhat Bayesian?
What is Rhat Bayesian? Rhat refers to the potential scale reduction statistic, also known as the Gelman-Rubin statistic. This statistic is (roughly) the ratio of the variance of a parameter when the data is pooled across all of the chains to the within-chain variance. How is R Hat calculated? To find ‘r hat”s, you need […]
What nerve sends signals to brain?
What nerve sends signals to brain? There are basically two major types of nerves: sensory and motor. Sensory nerves send information such as touch, temperature, and pain to the brain and spinal cord. Motor nerves send signals from the brain back into the muscles, causing them to contract either voluntarily or reflexively. What part of […]
Do projectiles have a predictable path?
Do projectiles have a predictable path? Projectiles do not follow a predictable path. Where will the ball have the smallest speed? The speed is smallest at the highest point of its flight path because the y- component of the velocity is zero. At what point of the projectile path the speed is i minimum and […]
What does not affect the pressure at a point beneath the surface of a liquid?
What are 2 similarities and 2 differences between ionic and covalent bonds?
What are 2 similarities and 2 differences between ionic and covalent bonds? The molecules that are formed from the ionic and covalent bonds are neutral. This is because, in an ionic bond, two opposite charges cancel each other while in a covalent bond, neutral components shared the pair of electrons. Ionic and covalent, both are […]
What are the three causes of mutation?
What are the three causes of mutation? Mutations are caused by environmental factors known as mutagens. Types of mutagens include radiation, chemicals, and infectious agents. Mutations may be spontaneous in nature. How many days is a mutation? The process takes 15 days to a month after which mutation certificate is issued. The local civic body […]