Which meter has a greater sensitivity and why? Meter A having a range of 0-10 V and a multiplier resistance of 18 kΩ and meter B with a range of 0-300 V and multiplier resistance of 298 kΩ? Both meter movements have a resistance of 2 kΩ.

in Electrical Engineering

Related questions

in Electrical Engineering

A 500kVA distribution transformer having copper and iron losses of 5kW and 3kW respectively on full load. The transformer is loaded as shown below: Loading (kW) Power Factor (Lag) No. of hours 400 0.8 06 300 0.75 12 100 0.8 03 No load - 03 Calculate the all-day efficiency.
Answer : To calculate the all-day efficiency of the transformer, we need to consider the total energy output, the total energy input, and the losses over a 24-hour period. The transformer experiences two types of ... \] ### Final Answer: The all-day efficiency of the transformer is approximately **98.39%**....

View solution

0 like 0 dislike

7 views 1 answer

in Electrical Engineering

Why most of analog o/p devices having o/p range 4 to 20 mA and not 0 to 20 mA?

Why most of analog o/p devices having o/p range 4 to 20 mA and not 0 to 20 mA?
Answer : The main reason most analog output devices use a 4 to 20 mA range instead of 0 to 20 mA is to ensure reliable operation and easier detection of faults. Here's a breakdown of why 4- ... fault detection, and stability in signal transmission, which is why it's widely adopted in analog output devices....

View solution

0 like 0 dislike

6 views 1 answer

in Electrical Engineering

A three-phase transformer having a line voltage ratio of 0.4 kV/11kV is connected Star/Delta and protective transformers on the 0.4 kV side have a current ratio of 500/5. Calculate the ratio of the protective transformers on the 11 kV side. Draw a neat circuit diagram and indicate the given values at appropriate places.

A three-phase transformer having a line voltage ratio of 0.4 kV/11kV is connected Star/Delta and protective transformers on the 0.4 kV side have a current ratio of 500/5. Calculate the ratio of ... on the 11 kV side. Draw a neat circuit diagram and indicate the given values at appropriate places.

View solution

0 like 0 dislike

6 views 0 answers

in Electrical Engineering

A 3 φ I.M. has synchronous speed of 250rpm and 4% slip at full load. The rotor has a resistance of 0.02Ω/ph and stand still reactance of 0.15Ω/ph. Calculate i) The speed at which max torque is developed. ii) The ratio of maximum to F. L. torque. iii) The ratio of maximum to starting torque.

View solution

0 like 0 dislike

10 views 0 answers

in Electrical Engineering

A 3 phase line of 4 km length delivers 4000 kW at a p.f of 0.8 lagging to a load the resistance and reactance per km of each conductor are 0.2 Ω and 0.5 Ω respectively if the voltage at the supply end is maintained at 11 kV. Calculate the received end voltage and efficiency of line.
Answer : Let's break down the problem step by step and calculate the received end voltage and the efficiency of the line. ### Given Data: - Power delivered to the load, \( P = 4000 \, \text{kW} \) - Power factor, \( \text{p. ... voltage**: \( 10.43 \, \text{kV} \) - **Efficiency of the line**: \( 98.61\% \)...

View solution

0 like 0 dislike

8 views 1 answer

in Electrical Engineering

A plant consists of two 10 MVA generators of reactance 18% each and two 5 MVA generators of 12% each. All are connected to bus bar to supply a load through three step up transformers of 8 MVA each having reactance of 8%. Determine fault MVA on HV side of any one transformer.

View solution

0 like 0 dislike

7 views 0 answers

in Electrical Engineering

You may have noticed there are fuse and circuit breakers. What is the difference between the both?

View solution

0 like 0 dislike

3 views 0 answers

in Electrical Engineering

Why is a diode 0.7 V?

Why is a diode 0.7 V?
Answer : The 0.7V you're referring to is typically the **forward voltage drop** of a **silicon diode**. It's the minimum voltage required for the diode to allow current to flow through it ... for the silicon material to overcome its internal barrier and allow current to flow in the forward direction....

View solution

0 like 0 dislike

6 views 1 answer

in Electrical Engineering

What is 18.2 Mω cm at 25 C?

What is 18.2 Mω cm at 25 C?
Answer : The value **18.2 MΩ·cm** is likely referring to **resistivity** at 25°C, a measure of how much a material resists the flow of electric current. This is commonly used for materials like insulators ... me know if you need help converting it to other units or if you're asking about something specific!...

View solution

0 like 0 dislike

10 views 1 answer

in Electrical Engineering

What is 18.2 ohm cm?

View solution

0 like 0 dislike

6 views 0 answers

in Electrical Engineering

Which metal has the lowest resistivity class 10?

View solution

0 like 0 dislike

3 views 0 answers

in Electrical Engineering

Which metal has highest resistivity class 10?

Which metal has highest resistivity class 10?
Answer : The metal with the highest resistivity is **Tungsten (W)**. Resistivity is a measure of how much a material resists the flow of electric current. Among all metals, tungsten has the highest ... (like in incandescent bulbs). To summarize: - **Tungsten** has the highest resistivity among metals....

View solution

0 like 0 dislike

8 views 1 answer

in Electrical Engineering

A single phase wattmeter rated for 500 V; 5 A is having full scale deflection of 1000 watt. What is multiplying factor of the wattmeter?

View solution

0 like 0 dislike

3 views 0 answers

in Electrical Engineering

What is the Q (Quality factor) of a series circuit that resonates at 10 kHz, has equal reactance of 5 kilo-ohms each, and a resistor value of 50 ohms?

View solution

0 like 0 dislike

5 views 0 answers

in Electrical Engineering

Which one is greater emf or terminal potential difference and why?

Which one is greater emf or terminal potential difference and why?
Answer : The **electromotive force (emf)** of a source is typically greater than the **terminal potential difference** (also called the terminal voltage) when there is a current flowing through the circuit. ### Here's ... \] So in this case, the terminal voltage is 10V, which is less than the emf of 12V....

View solution

0 like 0 dislike

9 views 1 answer

in Electrical Engineering

What is Equivalent Resistance between A and B?

View solution

0 like 0 dislike

4 views 0 answers

in Electrical Engineering

Can a photon have 0 spin?

Can a photon have 0 spin?
Answer : No, a photon cannot have zero spin. A photon is a particle of light, and it always has a spin of 1. However, its spin can only take certain values depending on the direction it's moving. Photons are **massless** ... motion. So, in summary, a photon always has spin 1, but it can't have a spin of 0....

View solution

0 like 0 dislike

10 views 1 answer

in Electrical Engineering

Does a circle have 0 or 1 side?

Does a circle have 0 or 1 side?
Answer : A circle is often said to have **1 side**. This is because it's a continuous curve with no breaks or angles. So, while it doesn't have sides in the same way a polygon (like a triangle ... circle has 0 sides because it doesn't have straight edges, but mathematically, it's considered to have 1 side....

View solution

0 like 0 dislike

6 views 1 answer

in Electrical Engineering

What is the emf B * L * V?

What is the emf B * L * V?
Answer : The formula \( \text{EMF} = B \times L \times V \) is related to the electromagnetic induction, specifically to how an electric voltage (electromotive force, EMF) is induced when a ... . This principle is used in devices like generators, where mechanical motion is converted into electrical energy....

View solution

0 like 0 dislike

7 views 1 answer

in Electrical Engineering

There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

View solution

0 like 0 dislike

5 views 0 answers

in Electrical Engineering

Which metal has zero resistance?

Which metal has zero resistance?
Answer : The metal that has zero resistance is **superconducting materials**. When certain metals and materials are cooled down to extremely low temperatures, they can exhibit **zero electrical resistance**. This ... , electrical current can flow without any resistance, which means no energy is lost as heat....

View solution

0 like 0 dislike

5 views 1 answer

in Electrical Engineering

Which wire has the highest resistance?

Which wire has the highest resistance?
Answer : The wire with the highest resistance typically has the following characteristics: 1. **Longer Length**: The longer the wire, the higher its resistance. This is because electrons have to travel through a ... a long, thin wire made of a high-resistivity material, it will have the highest resistance....

View solution

0 like 0 dislike

8 views 1 answer

in Electrical Engineering

Are diodes always 0.7 V?

View solution

0 like 0 dislike

5 views 0 answers

in Electrical Engineering

Can V be greater than emf?

Can V be greater than emf?
Answer : In a simple electrical circuit, the voltage (V) across a component (like a resistor, capacitor, etc.) cannot exceed the electromotive force (emf) of the power source (like a battery or generator). ... of the power source because the emf is the upper limit of the potential difference in the system....

View solution

0 like 0 dislike

4 views 1 answer

in Electrical Engineering

Which motor uses both AC and DC?

View solution

0 like 0 dislike

7 views 0 answers

in Electrical Engineering

What is the working principle of V meter?

View solution

0 like 0 dislike

4 views 0 answers

in Electrical Engineering Mathematics

Solve the following using Taylor’s Series Method (up to 3 terms): \[ \frac{dy}{dx} = x^2 + y, \quad y(0) = 1 \] Find \( y(0.2) \).

View solution

0 like 0 dislike

29 views 0 answers

in Electrical Engineering

Why tunnel diode has negative resistance?

Why tunnel diode has negative resistance?
Answer : A tunnel diode exhibits negative resistance because of a phenomenon called *quantum tunneling*. This happens due to the unique properties of its heavily doped p-n junction. Here's a ... the current decreases as the voltage increases, resulting in negative resistance in a certain voltage range....

View solution

0 like 0 dislike

5 views 1 answer

in Electrical Engineering

Why ammeter has lowest resistance?

View solution

0 like 0 dislike

6 views 0 answers

in Electrical Engineering

Difference between megger test equipment and contact resistance meter test instruments?

Difference between megger test equipment and contact resistance meter test instruments?
Answer : The **Megger test equipment** and **contact resistance meter** are both used to test electrical systems, but they serve different purposes and operate on different principles. Here's a simple ... In short, one tests for insulation quality, while the other tests the quality of electrical connections!...

View solution

0 like 0 dislike

8 views 1 answer

in Electrical Engineering

An industrial consumer charged with the scheduled tariff of Rs.250 /kVA per month for maximum demand and 150 paisa per unit consumed for load factor of 60% and 80%. Find overall cost per unit at i) unity P.F. ii) 0.9 P.F. consider maximum demand of 50 kVA.
Answer : To solve this, we need to calculate the total cost of electricity consumption for an industrial consumer, considering the maximum demand (MD), load factor (LF), and power factor (PF) at ... tariff is based on kVA, and the load factor and total consumption determine the cost more significantly....

View solution

0 like 0 dislike

9 views 1 answer

in Electrical Engineering

What are the 2 types of smart meter?

View solution

0 like 0 dislike

4 views 0 answers

in Electrical Engineering

How many AC can run in 2 kW meter?

View solution

0 like 0 dislike

6 views 0 answers

in Electrical Engineering

Explain with block diagram the construction and working principle of three phases electronic energy meter?

View solution

0 like 0 dislike

9 views 0 answers

in Electrical Engineering

State/Describe the construction and working of western type frequency meter with labelled diagram.

View solution

0 like 0 dislike

7 views 0 answers

in Electrical Engineering

What is the new resistance of a given wire has resistance r if its radius is halved and length is unchanged?

What is the new resistance of a given wire has resistance r if its radius is halved and length is unchanged?
Answer : When the radius of a wire is halved, its resistance changes according to the formula for the resistance of a wire: \[ R = \rho \frac{L}{A} \] Where: - \( R \) is the resistance, - \( \rho ... the original resistance. So, if the original resistance is \( r \), the new resistance will be \( 4r \)....

View solution

0 like 0 dislike

6 views 1 answer

in Electrical Engineering

Does nickel always have a +2 charge?

View solution

0 like 0 dislike

7 views 0 answers

in Electrical Engineering

Is theorem 6.2 Class 10?

View solution

0 like 0 dislike

7 views 0 answers

in Electrical Engineering

How many kilometers should I walk to lose 10 kgs in 2 months?

View solution

0 like 0 dislike

7 views 0 answers

in Electrical Engineering

A single phase AC distributor AB 300 M long is fed from end A and is loaded as under.

View solution

0 like 0 dislike

6 views 0 answers

in Electrical Engineering

When a wire is stretched and its radius becomes R by 2 then its resistance will be?

View solution

0 like 0 dislike

6 views 0 answers

in Electrical Engineering

Define the following terms with respect to protective relays: i) Relay time ii) Reset current iii) Plug setting multiplier iv) Time setting multiplier.

View solution

0 like 0 dislike

5 views 0 answers

in Electrical Engineering

For which type of circuit having theorem is applicable?

View solution

0 like 0 dislike

6 views 0 answers

in Electrical Engineering

Which is greater between emf and potential difference?

View solution

0 like 0 dislike

6 views 0 answers

in Electrical Engineering

Which type of current flows in both directions?

Which type of current flows in both directions?
Answer : The type of current that flows in both directions is called **alternating current (AC)**. In AC, the direction of the flow of electric charge periodically reverses, unlike **direct current ( ... transformed to different voltages. In contrast, DC, like from batteries, flows in a single direction....

View solution

0 like 0 dislike

6 views 1 answer