- Is quartered
- Quadruples
- Doubles
- Does not change
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Rohit was walking on the street, one boy requested him to donate for cancer patients welfare fund. He gave him a rupee more than half the money he had. He walked a few more steps. Then came a girl who requested him to donate for poor people's fund for which he gave two rupees more than half the money he had then. After that, again a boy approached him for an orphanage fund. He gave three rupees more than half of what he had. At last he had just one rupee remaining in his hand. How much amount did Ram have in his pocket when he started?
Answer: Option 3 Let X be the rupees he initially had. He gave for the cancer fund one rupee more than half of what he had. i.e.,[1 +(X/2)]. Remaining money = X-(1+X/2) =...
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Energy stored by a coil is doubled when its current is increased by percent.?
Answer: Option 3 Let'
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A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current?
Answer: Option 1 Let'
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When the current through an inductor decreases, the amount of energy stored in the electromagnetic field?
Answer: Option 2 Let'
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The strain energy stored in a body, when suddenly loaded, is __________ the strain energy stored when same load is applied gradually.?
Answer: Option 4 Let'
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A man sells chocolates which are in the boxes. Only either full box or half a box of chocolates can be purchased from him. A customer comes and buys half the number of boxes which the seller had plus half box more. A second customer comes and purchases half the remaining number of boxes plus half a box. After this the seller is left with no chocolate boxes. How many chocolate boxes the seller had initially?
Answer: Option 2 The best way to go through the options Let there are initially 3 boxes then, 1st customer gets = $$\frac{3}{2}$$ + $$\frac{1}{2}$$ = 2 Remaining boxes = 3 - 2...
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Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer : Statements : Wind is an inexhaustible source of energy and an aerogenerator can convert it into electricity. Though not much has been done in this field, the survey shows that there is vast potential for developing wind as alternative source of energy. Conclusions : I. Energy by wind is comparatively newly emerging field. II. The energy crisis can be dealt by exploring more in the field of aero-generation.?
Answer: Option 5 The phrase 'not much has been done in this field' indicates that wind energy is a comparatively newly emerging field. So, I follows. The expression 'there is...
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Directions : Each of the following question consists of a statement followed by two arguments I and II. You have to decide which of the arguments is a STRONG arguments and which is a WEAK Argument. Statement : Should India make efforts to harness solar energy to fulfil its energy requirements Arguments : I. Yes, Most of the energy sources used at present is exhaustible. II. No. Harnessing solar energy requires a lot of capital, which India lacks in.?
Answer: Option 1 Clearly, harnessing solar energy will be helpful as it is an inexhaustible resource unlike other resources. So, argument I holds. But argument II is vague as solar...
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Which of the fpllowing inductor will have the least eddy current losses ?
Answer: Option 1 Let'
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Which of the following circuit element stores energy in the electromagnetic field?
Answer: Option 1 Let'
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