Question
If input frequency of a full wave rectifier be n, then
output frequency would be-Solution
The frequency of a full-wave rectifier is double that of the input, if the input is a sine wave. A full-wave rectifier converts the whole of the input waveform to one of constant polarity (positive or negative) at its output. Full- wave rectification converts both polarities of the input waveform to DC (direct current), and yields a higher mean output voltage.
A shopkeeper marked an article 50% above its cost price and made a profit of Rs. 320 when he sold the article after giving a discount of 20%. Find the p...
Article ‘P’, if sold at a profit of 20% earns a profit of Rs. 500. If article ‘P’ is marked 40% above its cost price and then sold after offerin...
An item is sold for a profit of 20%. If the cost to purchase the item had been reduced by 20%, and it was subsequently sold at a 25% loss, the seller wo...
A wholesaler buys 200 packets of biscuits for ₹15,000. During transportation, 15% of the packets get damaged and cannot be sold. If he wants to make a...
Tarun and Ajit are wardrobe dealers. The cost of the wardrobe is Rs 44,000. Is. Tarun gives a discount of 18% on the full price, while Ajit gives Rs 38,...
A tradesman gives a 4% discount on the marked price and gives an article free for buying every 15 articles and thus gains 35%. Find out by what percenta...
Sunita bought a bicycle and sold it at a profit of 30%. Had she bought it for Rs. 600 less and sold it for Rs. 660 more, she would have earned a profit...
A seller marked the price of an item at Rs. 3,000. The seller gave successive discounts of (y + 3)% and (y - 3)% to a customer. If the customer paid Rs....
Seema sold a laptop at a profit of 15%. If she had bought it at 10% less and sold it for ₹ 2,200 more, she would have gained 40%. What was the cost pr...
An article is sold at a price that is 40% higher than its cost price. After offering a discount of Rs. 116, the seller still makes a profit of 24%. Wha...