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Working of safety fuses depends upon 1. magnetic effect of the current 2. chemical effect of the current 3. magnitude of the current 4. heating effect of the current Select the correct answer using the code given below.

Working of safety fuses depends upon 1. magnetic effect of the current 2. chemical effect of the current 3. magnitude of the current 4. heating effect of the current Select the correct answer using the code given below. Correct Answer 3 and 4 only

An electric fuse is a device which is used to limit the current in an electric circuit. The fuse safeguards the circuit and the electrical appliances from being damaged.

The fuse wire is generally an alloy of lead and tin. It has a low melting point and breaks the circuit if the current exceeds a safe value. The thickness and length of the fuse wire depends on the maximum current allowed through the circuit.

It is connected in series in the beginning of the electric circuits.

If too many electrical appliances of high power rating (like electric iron, water heater etc) are switched on at the same time, they draw an extremely large current from the circuit. This condition is called overloading and it can cause overheating of the wiring and lead to a fire. (heating effect and magnitude of the current)

 

Related Questions

Working of safety fuses depends upon
1. magnetic effect of the current
2. chemical effect of the current
3. magnitude of the current
4. heating effect of the current
Select the correct answer using the code given below.
In the question below, are given a statement followed by three courses of actions numbered I, II and III. On the basis of the information given, you have to assume everything in the statement to be true, and then decide which of the following suggested courses of actions logically follow(s) for pursuing. Statement: Starting October, all new cars will have pedestrian safety features, including new design of the bonnet, to reduce impact on pedestrians during accidents. Advanced safety features are needed in all vehicles in India as vehicle safety cannot be confined to luxury vehicles only. Around 1.5 lakh people are killed in road accidents every year in the country, nearly 60% of them are pedestrians.  Courses of action: I. The government has set a target to reduce the number of road deaths by half in the next two years. The ministry of road transport and highways has been issuing new safety standards for the automobiles along with eliminating the black spots on national highways.  II. By next month, all new cars will have pedestrian safety feature, including new design of the bonnet, to reduce impact on pedestrians during accidents.  III. Ministry of road transport and Highways is planning to implement all safety features in vehicles with active support of vehicle manufacturers. Electronic stability control (ESC) and autonomous emergency braking (AEB) will be incorporated in new vehicles by 2022.
What is the probability that at most 5 defective fuses will be found in a box of 200 fuses, if 2% of such fuses are defective?
How is permaculture farming different from conventional chemical farming? 1. Permaculture farming discourages monocultural practices but in conventional chemical farming, monoculture practices are predominant. 2. Conventional chemical farming can cause an increase in soil salinity but the occurrence of such phenomenon is not observed in permaculture farming. 3. Conventional chemical farming is easily possible in semi-arid regions but permaculture farming is not so easily possible in such regions. 4. Practice of mulching is very important in permaculture farming but not necessarily so conventional chemical farming Select the correct answer using the code given below.  
A, B, C, D, K, L, M and O are researchers and are working in three different institutes, X, Y and Z. They are working in three different areas namely, solar energy, sustainable development, and rainwater harvesting for agricultural purpose. Not less than two or more than three researchers are working in the same area and not more than three of them are working the same institute. K is researching in the sustainable development in the institute Y with B who is doing research in rainwater harvesting. A and M are doing research in the same area but not in sustainable development and are not working in the institute Y. C is researching in solar energy in the institute Z, only with D who is working in sustainable development. L is researching in rainwater harvesting area and not working in the institute where A works. O is not doing research in the solar energy. Choose option for answering question, In which of the institute/institutes at least one researcher is working in the area of solar energy ?
Which of the following rules stands true while preparing a schedule of changes in working capital? (A) An increase in current assets increases working capital (B) An increase in current assets decreases working capital (C) An increase in current liabilities decreases working capital (D) An increase in current liabilities increases working capital Choose the most appropriate answer from the options given below:
Which of the following statements is/are correct regarding Magnetic Resonance Imaging (MRI)? 1. Magnetic field inside our bodies is similar and equal in magnitude to that of earth. 2. Heat generated by our body parts can be traced by an electromagnetic field. Select the correct answer using the code given below.
What is the total number of employees in the company? Which of the following option is sufficient alone to find the answer? A) In the company, employees like either tea or coffee or cold drink. Out of the total employees, 25% like tea and 40% like coffee. Out of remaining employees, 20% like cold drink and remaining employees don’t like any of these drinks. B) Out of total employees 18% working in the marketing departments, 35% working in IT departments. From the remaining employees 25% working in HR departments and 45% working in content departments and remaining 141 are working in other departments. C) Employees working in the company is form state X, Y and Z. 20% of employees working in the company is from state X and from remaining 60% employees is from state Z and the remaining employees is from the state Y. D) 60% of the employees in the company are married and remaining employees are unmarried. The ratio of male and female unmarried employees is 4 : 5 and ratio of married male and female employees is 3 : 4.
If the amplitude or oscillation of a simple pendulum is very small, then its time period of oscillation
1. depends on the length of the pendulum, L.
2. depends on the acceleration due to gravity, g.
3. depends upon the mass of the bob of the pendulum, m.
4. does not depend upon the amplitude of the pendulum, A.
Select the correct answer:
Study the given pie chart and answer the question given below. Percentage breakup of employees working in different departments of a company Department the ratio of men and women male female Information technology (IT) 11 12 Account 5 4 Marketing 8 9 Production 4 3 Human Resource (HR) 9 5 Total number of employees = 1800 If 10% of the men working in the Accounts department are transferred to the HR department, and one-fourth of the female employees working in the Production department is transferred to the Marketing department, then the number of male employees working in the HR department is what percent less than the number of female employees working in the Marketing department? (correct to one decimal place)