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How is electromagnetism used today?
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Mar 10, 2018
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anonymous
How is electromagnetism used today?
electromagnetism
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answered
Dec 21, 2018
by
Saqibhayat556
The base of electrical engineering is electromagnetism. You found electromagnetism everywhere in a electrical devices around you.
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Mar 10, 2018
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Why is electromagnetism so important?
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How can a magnetic field be used to generate an electric current?
How can a magnetic field be used to generate an electric current?
Last answer:
Magnetic field can be used to generate electric current on a condition that it is on a rate of changing magnetic flux. (Faraday's law)
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What are the electromagnetic waves used in remote control?
What are the electromagnetic waves used in remote control?
electromagnetic
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Jan 10
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The average age of Krishnan family of 10 members was 34 yrs, 3 yrs ago. A baby having been born, the average age of the family is the same today. The present age of the baby. A) 1yr B) 3yrs C) 4yrs D) 2yrs
The average age of Krishnan family of 10 members was 34 yrs, 3 yrs ago. A baby having been born, the average age of the family is the same today. The present age of the baby. A) 1yr B) 3yrs C) 4yrs D) 2yrs
Last answer:
C) Total age of 10 members , 3 yrs ago = (34*10)yrs = 340 yrs Total age of 10 members now = (340 +3*10) =370yrs Total age of 11 members now = (34*11)yrs =374yrs Therefore age of the baby= 374 – 370 =4yrs.
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Jul 20, 2020
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Where can you find London bridge today
Where can you find London bridge today
Last answer:
USA ( Arizona )
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Apr 9, 2018
by
anonymous
A radioactive isotope has a half-life of 10 days. If today there are 125 g of it left, what was its original weight...
A radioactive isotope has a half-life of 10 days. If today there are 125 g of it left, what was its original weight 40 days earlier (a) 600 g (b) 1000 g (c) 1250 g (d) 2000 g
Last answer:
Half life = 10days The formula which is, 1/(2)^n × original weight = Weight left today. To obtain the value of n = divide no of days by half life ie.,n= 40/10= 4 n=4 So, 1/(2)^n × original Weight = 125g 1/(2)^4 × Original weight = 125 Original weight = 16×125 = 2000g
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Mar 10, 2018
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anonymous
What is the speed of an electromagnetic wave in water?
What is the speed of an electromagnetic wave in water?
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Mar 10, 2018
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What is the force that holds protons and neutrons together in the nucleus of an atom?
What is the force that holds protons and neutrons together in the nucleus of an atom?
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What is an example of an electromagnetic?
What is an example of an electromagnetic?
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Mar 10, 2018
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What is the definition of electromagnetic force?
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May 18, 2018
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The rms value of the current in a wire which carries a d.c. current of 10 A and a sinusoidal alternating current
The rms value of the current in a wire which carries a d.c. current of 10 A and a sinusoidal alternating current of peak value 20 A is (A) 10 A (B) 14.14 A (C) 15 A (D) 17.32 A
Last answer:
The rms value of the current in a wire which carries a d.c. current of 10 A and a sinusoidal alternating current of peak value 20 A is 17.32 A
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May 18, 2018
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The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper
The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper tube of 60 mm diameter is (A) 3.2 µH (B) 3.2 mH (C) 32.0 mH (D) 3.2 H
Last answer:
The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper tube of 60 mm diameter is 32.0 mH
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Mar 10, 2018
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What are the dangers of electromagnetic waves?
What are the dangers of electromagnetic waves?
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Mar 10, 2018
by
anonymous
What do you mean by electromagnetic field?
What do you mean by electromagnetic field?
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Jan 12
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A single petrol tank supplies the petrol to the whole city, while the petrol tank is fed by a single pipeline filling the tank with the stream of uniform volume. When the petrol tank is full and if 20,000 litres of petrol is used daily, the supply fails in 45 days. If 16,000 litres of petrol is used daily, it fails in 30 days. How much petrol can be used daily without the supply every failing? a) 28000 b) 47000 c) 24000 d) 42000
A single petrol tank supplies the petrol to the whole city, while the petrol tank is fed by a single pipeline filling the tank with the stream of uniform volume. When the petrol tank is full and if 20,000 litres of petrol is used daily, the supply fails in 45 days. If 16,000 litres of petrol is used daily, it fails in 30 days. How much petrol can be used daily without the supply every failing? a) 28000 b) 47000 c) 24000 d) 42000
Last answer:
A Let x litre be the per day filling and y litre be the capacity of the tank, then 45x + y = 20000 × 45 =900000…. (1) 30x + y = 16000 × 30 =480000…. (2) Solving eq. (1) and (2), we get 15x=420000 X=420000/15 x = 28000 Hence, 28000 litres per day can be used without the failure of supply
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Jan 10
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anonymous
A large cistern can be filled by 2 pipes P & Q in 120 mins and 80 mins respectively. How many mins will it take to fill the cistern from empty state if Q is used for half the time and P & Q fil it together for the other half? A) 2hrs B) 1hr C) 3hrs D) 4hrs
A large cistern can be filled by 2 pipes P & Q in 120 mins and 80 mins respectively. How many mins will it take to fill the cistern from empty state if Q is used for half the time and P & Q fil it together for the other half? A) 2hrs B) 1hr C) 3hrs D) 4hrs
Last answer:
B Part filled by (P+Q) in 1 min = 1/120 + 1/80 =2+3/240 = 5/240 = 1/48 Suppose the cistern is filled in x mins then, x/2 (1/48 + 1/80) = 1 x/2(5+3/240)=1 8x/480 = 1 x=480/8 x= 60 mins or 1 hr
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Aug 3, 2020
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If space (the absence of attributes) is a coaxial circuit, how can that knowledge be used to create "free" energy ?
If space (the absence of attributes) is a coaxial circuit, how can that knowledge be used to create "free" energy ?
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May 26, 2020
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Describe how Op-Amp is used as adder using circuit diagram and output voltage equation.
Describe how Op-Amp is used as adder using circuit diagram and output voltage equation.
Last answer:
Summing Amplifier Circuit In this simple summing amplifier circuit, the output voltage, ( Vout ) now becomes proportional to the sum of the input voltages, V1, V2, V3, etc. Then we can ... to the non-inverting input of the op-amp, it will produce the positive sum of the input voltages.
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Aug 10, 2019
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Explain how MEMS accelerometer is used as airbag sensor for car system.
Explain how MEMS accelerometer is used as airbag sensor for car system.
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MEMS Accelerometer is used as airbag sensor: Mechanical ignition airbags fit inside the steering wheel pad. When a collision occurs, the inertial sensor moves, setting off a ... the airbag with wiring. This is especially effective when fitting both driver- and passenger-side airbags.
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Sep 12, 2018
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How strain gauge is used for pressure measurement, explain?
How strain gauge is used for pressure measurement, explain?
Last answer:
strain gauge: - strain gauge is used for pressure measurement as one of the arm of a wheatstones' bridge, the pressure is applied to the strain gauge through diaphragm elastic pressure sensor.
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Sep 9, 2018
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anonymous
What is capsule? How it is used for pressure measurement?
What is capsule? How it is used for pressure measurement?
Last answer:
A capsule is made up of two identical corrugated diaphragms so as to form a leak- proof chamber and also referred to as an aneroid. The fluid under measurement is entered in to ... one side to communicate the displacement. The opening is provided in other diaphragm to apply the pressure.
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Apr 11, 2018
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anonymous
How many bits Internet address is assigned to each host on a TCP/IP Internet which is used in all ...
How many bits Internet address is assigned to each host on a TCP/IP Internet which is used in all communications with host? A) 16 bits B) 32 bits C) 48 bits D) 64 bits
Last answer:
How many bits Internet address is assigned to each host on a TCP/IP Internet which is used in all communications with host? 32 bits
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Mar 19, 2018
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anonymous
How is a thyristor used to convert AC to DC?
How is a thyristor used to convert AC to DC?
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Jan 24, 2018
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Explain how UART is used for communication highlighting the advantages of UART.
Last answer:
UART takes parallel data and transmits serially and UART receives serial data and converts to parallel.A simple UART may possess1.Some configuration registers and2.Two independently operating processors, one ... must write data to the transmit register and/or read data from the received register.
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Jan 10
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anonymous
Aakash and Aravind are partners in a business. Aakash contributes 1/5 of the capital of 16 months and aravind received ¾ of the profit. For how long Aravind money was used? A) 11 months B) 12 months C) 13 months D) 14 months
Aakash and Aravind are partners in a business. Aakash contributes 1/5 of the capital of 16 months and aravind received ¾ of the profit. For how long Aravind money was used? A) 11 months B) 12 months C) 13 months D) 14 months
Last answer:
Answer: B) Let the total profit be Rs z Then, Aravind share = 3z/4 Aakash share = z - 3z/4 = z/4 Aakash : Aravind = Z/4 : 3z/4 = 1:3 Let the total capital be Rs x Suppose Aravind's money was used for y months.then, ... * 16/4/5x * y = 1/3 3 (16x/5) = 4x/5 * y 48 = 4y Y = 48/4 = 12 months.
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Jan 10
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anonymous
Q and K are partners in a Company. Q receives 4/7th of the capital for 9months and K received 1/5th of the profit,for how long K money used? A) 3 B) 4 C) 5 D) 6
Q and K are partners in a Company. Q receives 4/7th of the capital for 9months and K received 1/5th of the profit,for how long K money used? A) 3 B) 4 C) 5 D) 6
Last answer:
Answer: A) Let total profit gained be A Profit earned by K =1/5 *A Profit earned by Q =4/5*A Ratio of Q & K profit =4/5 *A:1/5*A=4:1 Total investment be P Q receives 4/7 th of p for 9 months K receives 3/7 th of P for Y months. Ratio of K & Q is, 1/4= (3/7*P*Y)/(4/7 *P*9) =>Y= 3 months =>K
partnership
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Jan 10
by
anonymous
Ajay and vivek are active partner in a particular work. Ajay receive 1/7th of the capital for 84 months and vivek receives 1/8 th of the profit, for how long vivek amount was used? a) 11 b) 8. C) 4 d) 2
Ajay and vivek are active partner in a particular work. Ajay receive 1/7th of the capital for 84 months and vivek receives 1/8 th of the profit, for how long vivek amount was used? a) 11 b) 8. C) 4 d) 2
Last answer:
Answer: D) Let total profit be A. Profit earned by vivek =1/8*A. Profit earned by Ajay =7/8 *A Ratio of vivek & Ajay =1:7 Let total capital investment be Z Ajay receive 1/7th of Z for 84 months Vijay receive 6/7th of Z for Y months 7/1=(1/7*Z*84)/(6/7*Z*Y) => Y = 2month
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asked
May 25, 2020
by
anonymous
How the mosfet can be used to amplify the time dependent voltage?
How the mosfet can be used to amplify the time dependent voltage?
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14
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May 15, 2018
by
anonymous
How many watt-hours represent 65 W used for 18 h?
How many watt-hours represent 65 W used for 18 h? A.11.7 Wh B.1,170 Wh C.11,700 Wh D.117,000 Wh
Last answer:
How many watt-hours represent 65 W used for 18 h? A.11.7 Wh B.1,170 Wh C.11,700 Wh D.117,000 Wh
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112
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1
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Mar 19, 2018
by
anonymous
How can BJT be used as an amplifier?
How can BJT be used as an amplifier?
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Dec 5, 2017
by
anonymous
How many insulator disc used for 33 kV transmission voltage line?
How many insulator disc used for 33 kV transmission voltage line?
Last answer:
5,As 33kv is Vrms
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