Question
The device to convert alternating current into direct
current isSolution
A rectifier is a device that converts alternating electric current into direct current. It may be an electron tube (either a vacuum or a gaseous type), vibrator, solid-state device, or mechanical device. Hence option B is correct. A transformer is a device that transfers electric energy from one alternating-current circuit to one or more other circuits, either increasing (stepping up) or reducing (stepping down) the voltage. An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. A Condenser is a device for reducing a gas or vapour to a liquid. Condensers are employed in power plants to condense exhaust steam from turbines and in refrigeration plants to condense refrigerant vapours, such as ammonia and fluorinated hydrocarbons.
Akash ranks 18th in a class of 37 students. What is his rank from the last?
Select the correct mirror image of the given figure when the mirror is placed to the right side of the figure.
A cube is made by folding the given sheet. In the cube so formed, which pair of letters will be on the opposite faces?
Select the option that represents the letters which, when sequentially placed from left to right in the blanks below, will complete the letter series.
If β-β means βΓ·β, βΓβ means β+β, βΓ·β means βΓβ and β+β means β-β what will be the value of the following expression?...
Select the Venn diagram that best illustrates the relationship between the following classes.
Engineers, Players, Poets
Figure A is related to Figure B in a certain way. Following the same pattern, Figure C is related to Figure D. Study the pattern and select the figure w...
There are 3 badminton players in each stream -Commerce, Science and Arts. A, B and C are from Commerce. P, Q and R are from Science. J, K and L are from...
428 is related to 317 following a certain logic. Following the same logic, 285 is related to 174. To which of the following is 597 related to, following...
How many triangles are there in the given figure?