Official previous years' question bank with solutions for DC Generators & Motors, AC 3-Phase Induction Motors, Transformers, Armature Winding, Industrial Wiring, Battery Maintenance, and Earthing Practices.
Marking pattern: +1.00 positive, -0.25 negative (Official BHEL Artisan Pattern).
A and B can complete a work alone in 12 days and 16 days, respectively. If they work together, what fraction of that work will they complete in 6 days?
How many years will it take to earn ₹2,000 as simple interest on a principal sum of ₹5,000 at the rate of 10% per annum?
Seven persons A, B, C, D, E, F, and G are sitting in a straight row facing North. Only two persons sit to the right of E. Only three persons sit between G and E. F is the immediate neighbor of both A and G. C sits to the immediate left of B. Who sits second to the right of D?
A solid cylindrical rod of radius 10 cm and height 30 cm is melted and recast into a solid cylinder of radius 5 cm. Find the height (in cm) of the new cylinder.
If the cost of 28 meters of cloth is ₹2,492, what will be the cost of 12 meters of the same cloth?
An article is marked at Rs. 1,000. A shopkeeper offers a discount of 10% and then an additional discount of 20%. What is the final selling price?
A, B, C, D, E, F, and G are sitting around a circular table facing the center. G is sitting second to the right of C, who is sitting to the immediate right of F. A is sitting third to the left of E. E is sitting to the immediate right of C. B is to the immediate right of G. Which of the following is true?
Simplify the following mathematical expression:
$$9 \times (1 \times (4^2)) \div 13 + 62 - 3$$
In a certain code language:
'A & B' means 'A is the son of B',
'A @ B' means 'A is the brother of B',
'A + B' means 'A is the wife of B', and
'A x B' means 'A is the father of B'.
If the expression is 'V & R @ T + H x G', then how is V related to G?
A group of 40 volunteers is standing in a straight line facing North. Kavya is at the 15th position from the right end, and Dinesh is at the 22nd position from the left end. How many volunteers are standing between Kavya and Dinesh?
Aman invests Rs. 10,000 in a bank that offers compound interest at the rate of 6% per annum compounded annually. What will be the compound interest earned after 2 years?
If '+' and '÷' are interchanged, and '-' and '×' are interchanged, what will replace the question mark (?) in the following equation?
$$81 + 9 \div 35 \times 18 - 2 = ?$$
The price of 1 kg of tomatoes is Rs. 36. If its price decreases by 25% and then increases by 20% in the next two seasons respectively, find its rate after two seasons.
The ratio of boys and girls in a class is 5 : 3. If there are 35 boys in the class, how many total students are there in the class?
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.
Statements:
Some trucks are cars.
Some cars are ships.
Conclusions:
(I) Some trucks are ships.
(II) All ships are cars.