RRB ALP GK Questions 2026

The force he applies to support the load acts vertically upward, while his displacement along the platform is horizontal, so the angle between force and displacement is ninety degrees and the work done against gravity is zero, however tired he may feel.

The work-energy theorem states that the net work done on a body equals the difference between its final and initial kinetic energies, which is why a push that speeds a body up does positive work while friction, which slows it, does negative work.

A dynamo, also called a generator, is turned by some mechanical agency such as falling water, steam or a bicycle wheel, and the rotation of a coil in a magnetic field produces an electric current by electromagnetic induction.

Kinetic energy is half the mass into the square of the speed, so when the speed is multiplied by two the energy is multiplied by two squared, that is four.

Household electricity is billed in these units, and one kilowatt hour, popularly called one unit, is the energy consumed when an appliance of one kilowatt runs for one hour; in SI terms it equals 3.6 million joule.

The horsepower is an older unit of power that survives in the rating of motors and vehicles, and one horsepower is taken as about 746 watt, that is roughly three quarters of a kilowatt.

Power is the rate of doing work, that is work divided by the time taken, so its unit is the joule per second, which is named the watt after James Watt.

Kinetic energy is the energy a body has because of its motion, and it grows with the square of the speed, so a body moving twice as fast carries four times the kinetic energy.

Work equals force into displacement into the cosine of the angle between them, and the cosine of ninety degrees is zero, so a force at right angles to the motion does no work at all.

Work is the product of force and displacement, so its unit is the newton metre, which is given the name joule; one joule of work is done when a force of one newton moves a body through one metre in its own direction.

Electric current is the rate of flow of electric charge, written as I = Q/t, so one ampere flows when one coulomb of charge passes through a cross-section of a conductor in one second.

Aluminium naturally forms a thin layer of aluminium oxide when it is exposed to air, and this layer protects it from further corrosion.

The Hornbill Festival is held every year from 1 to 10 December at Kisama Heritage Village near Kohima, the capital of Nagaland.

Kambala is a traditional buffalo race of coastal Karnataka, held mainly in the Dakshina Kannada and Udupi districts, the Tulu Nadu region.

The Manipur Sangai Festival is held every year from 21 to 30 November to showcase the state's culture and tourism.

Producers, the green plants and algae, are the most numerous living part of an ecosystem because every other organism depends on them for food.

In 2018 the Union Environment Ministry started a pilot project to clean up and develop selected beaches so that they could win the Blue Flag.

France was the first country to introduce GST, in 1954. The idea came from Maurice Lauré, a French tax official, who designed a tax charged at every stage of production and sale but only on the value added at that stage.

Assam became the first state to ratify the GST Constitution Amendment Bill, on 12 August 2016, soon after Parliament passed it.

Prime Minister Narendra Modi launched the Swachh Bharat Mission on 2 October 2014, Mahatma Gandhi's 145th birth anniversary, at Rajpath in New Delhi.