Birst Interview Questions and Answers

Identify mistakes in the given JSON.

• The keys should be enclosed in double quotes.

• The value of 'age' should be a number, not a string.

• The value of 'isActive' should be a boolean, not a string.

• The last item in the array should not have a comma after it.

The least count of a vernier caliper is the smallest measurement that can be accurately read on the scale.

• The least count is determined by the number of divisions on the main scale and the vernier scale.

• It is calculated by dividing the smallest division on the main scale by the number of divisions on the vernier scale.

• For example, if the smallest division on the main scale is 0.1 mm and the vernier scale has 10 divisio...read more

There are two types of smokes: first-hand smoke and second-hand smoke.

• First-hand smoke is the smoke inhaled directly from a cigarette or other tobacco product.

• Second-hand smoke is the smoke exhaled by a smoker or the smoke from the burning end of a cigarette.

• Second-hand smoke is also known as passive smoking and can be harmful to non-smokers.

• There are also different types of tobacco products that produce smoke, such as

Alternator is a device that converts mechanical energy into electrical energy.

• It is used in vehicles to charge the battery and power the electrical system.

• It works by using a magnetic field to generate an alternating current.

• The output voltage is regulated by a voltage regulator.

• It is an essential component of the vehicle's charging system.

• Examples of vehicles that use alternators include cars, trucks, and motorcycles.

Petrol and diesel engines differ in fuel type, combustion process, and efficiency.

• Fuel type: Petrol engines use gasoline while diesel engines use diesel fuel.

• Combustion process: Petrol engines use spark ignition while diesel engines use compression ignition.

• Efficiency: Diesel engines are generally more fuel-efficient than petrol engines.

• Examples: Petrol engine - used in most cars; Diesel engine - used in trucks and hea

The differential is a component in a vehicle that allows the wheels to rotate at different speeds.

• It helps with turning by allowing the outside wheel to rotate faster than the inside wheel.

• It also helps with traction by allowing the wheel with the most grip to receive more power.

• Without a differential, the wheels would be locked together and unable to rotate at different speeds.

• Examples of vehicles that use differentia

The price of oil varies depending on the type and location. As of today, Brent crude oil is trading at $63.67 per barrel.

• Oil prices are determined by supply and demand, geopolitical events, and economic factors.

• Different types of oil have different prices. Brent crude oil is a benchmark for global oil prices.

• Oil prices can fluctuate daily and are influenced by global events such as wars, natural disasters, and politica...read more