Prepare for BHEL Artisan (Electronics Mechanic) recruitment examination with official previous years' solved questions across Basic Electrical & AC Fundamentals, Passive & Active Components, Semiconductor Devices (Diodes, BJTs, MOSFETs), Power Electronics & Converters (SCR, TRIAC), Digital Electronics, Electronic Instruments (CRO, Multimeter), SMPS & Inverters, and Industrial Soldering Standards.
Marking pattern: +1.00 positive, -0.25 negative (Official BHEL Artisan CBT Scheme).
The number of subscribers to a channel increase successively by 20% and 10%. Find the net percentage increase in the subscribers.
Seven people, A, B, C, D, E, F and G are sitting in a straight line, facing north. Only two people sit to the left of A. Exactly three people sit between A and C. D is an immediate neighbour of both F and B. G sits to the immediate left of E. Only two people sit between F and G. How many people sit between E and B?
In a certain code language, 'FOAL' is coded as '9087' and 'COAL' is coded as '6908'. What is the code for 'F' in that language?
Two pipes, A and B, together can fill a cistern in 3 hours. If they were opened one at a time, B would take 8 hours more than A to fill the cistern. How much time (in hours) will it take for only A to fill two such cisterns?
Seven boxes A, B, C, D, E, F and G are stacked one on top of another, but not necessarily in the same order. C is kept at the fourth position from the bottom. Exactly two boxes are kept between B and G. A is kept immediately above G. Only F is kept immediately below D. Which box is third from the top?
Which of the following ratios is the greatest?
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
$A \times B$ means 'A is the father of B'.
How is V related to G if 'V & R + T @ H x G'?
Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number results in the second number. Similarly, certain mathematical operation(s) on the second number results in the third number and so on. Which of the given options follows the same set of operations as in the given sets?
$$8 - 13 - 26 - 39;\quad 11 - 16 - 32 - 48$$
What will be the difference between simple and compound interest (compounded annually) on a sum of ₹9,000 for 2 years at 5% per annum?
If 'S' stands for '−', 'T' stands for '×', 'U' stands for '+' and 'V' stands for '÷', what will come in place of the question mark (?) in the following equation?
$$20\text{ U } 4\text{ V } 11\text{ S } 8\text{ T } 2 = ?$$
If 2 is subtracted from each odd digit and 3 is added to each even digit in the number 76942563, then what will be sum of the greatest and smallest digits in the number thus formed?
Find the value of $$1\frac{3}{5} + 1\frac{8}{9} + 3\frac{4}{5}$$.
If the simple interest on a certain sum for 2 years is one-fifth of the sum, then find the rate of interest per annum.
When a fair die is rolled once, what is the probability of getting a number greater than 5?
Vishal ranked 15th from the top and 67th from the bottom in his class. How many students are there in his class?
The number 535486 is divisible by:
If the radius of a sphere is 13 cm, then its surface area is:
In a test, B got 58 marks while A got 80 marks, out of 105 maximum marks. What percentage of A's marks was B's marks?
Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number results in the second number. Similarly, certain mathematical operation(s) on the second number results in the third number and so on. Which of the given options follows the same set of operations as in the given sets?
$$10 - 20 - 40 - 50;\quad 2 - 4 - 8 - 18$$
In a row of 28 people facing the north, Akshita is sitting $8^{\text{th}}$ from the right end. If Rinki is sitting 4th to the left of Akshita, what is Rinki's position from the left end of the line?