RRB ALP GK Questions 2026

The working rule for charging a storage battery is that the charging current should be about one-tenth of the ampere-hour capacity of the battery, which is called the C by 10 rate.

Aluminium is the most abundant metal in the crust of the earth, making up about eight per cent of it by weight.

The Lucknow Pact of 1916 was an agreement between the Congress and the Muslim League. It was signed at the Lucknow session, where Ambika Charan Mazumdar presided for the Congress.

Every citizen of India who is eighteen years of age or more may vote, and the age is the same for men and women.

Sulphur dioxide is an air pollutant but it is not counted among the greenhouse gases. A greenhouse gas is one that lets sunlight through but absorbs the long wave infrared radiation the earth sends back, so it warms the lower atmosphere.

Under monopolistic competition a single firm faces a demand curve that is relatively elastic, so it slopes downward but is fairly flat.

Fuehrer is the German word for leader, and Adolf Hitler took it as his title in Germany. Hitler led the Nazi Party, became Chancellor in January 1933, and after the death of President Hindenburg in 1934 merged the two offices and styled himself Fuehrer and Reich Chancellor.

Archimedes used his principle to test whether the crown of King Hiero II of Syracuse was pure gold. The principle says that a body immersed in a fluid is buoyed up by a force equal to the weight of the fluid it displaces.

Gravitational force is directly proportional to each mass, so doubling one mass doubles the force. Newton law of universal gravitation states that the force between two bodies is F equal to G m1 m2 divided by r squared.

The initiatives he cited as creating capability in emerging fields were the Deep Ocean Mission, the Quantum Mission, artificial intelligence, cyber security and the Anusandhan National Research Foundation, so options A, B and C all appear on that list.

The minister referred to this target together with the opening of the nuclear sector to private participation, and described nuclear power as an important clean-energy source for future requirements, among them the demand created by artificial intelligence and data centres.

The minister described this as the current size of the space economy and said it could reach USD 45 to 46 billion over the next 8 to 10 years if the present momentum continues, crediting the expansion to the opening of the sector and the entry of a wider set…

Doping replaces a few host atoms with impurity atoms, and each impurity atom brings its own nucleus along with its electrons, so the total positive and negative charge in the crystal stays balanced.

John Bardeen, Walter Brattain and William Shockley built the first working transistor at Bell Laboratories in 1947 and shared the Nobel Prize in Physics in 1956 for the discovery of the transistor effect.

A full-wave rectifier conducts during both halves of the input cycle, since one pair of diodes handles the positive half and the other pair the negative half.

They are called universal gates because either one of them, used repeatedly, can build every other logic gate, including NOT, AND, OR, XOR and XNOR.

The base of a transistor is made very thin and only lightly doped so that most of the carriers injected by the emitter pass straight through it to the collector instead of recombining in it.

A Zener diode is heavily doped so that breakdown occurs at a low and sharply defined reverse voltage. Beyond that point the voltage across it stays almost constant even when the current through it changes a great deal, which is precisely the property a voltage regulator needs.

A p-n junction conducts freely in forward bias, where the potential barrier is reduced, and blocks current in reverse bias, where only a tiny leakage current flows.

Silicon is the most widely used semiconductor and its forbidden energy gap, the separation between the top of the valence band and the bottom of the conduction band, is about 1.1 electron volts at room temperature.