What is the emissivity of 0?

in Electrical Engineering

Related questions

in Electrical Engineering

What is the emissivity of the human body?

View solution

0 like 0 dislike

3 views 0 answers

in Electrical Engineering

What is the SI unit of emissivity?

What is the SI unit of emissivity?
Answer : Emissivity is a **dimensionless** quantity, meaning it has no units. It is a ratio of the radiation emitted by an object to the radiation emitted by a perfect black body at the same temperature. Since both the ... the SI unit of emissivity is simply **1** (or it can be expressed as a pure number)....

View solution

0 like 0 dislike

9 views 1 answer

in Electrical Engineering

What is called emissivity?

View solution

0 like 0 dislike

4 views 0 answers

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

5 views 1 answer

in Electrical Engineering

Is a power of 0.8 good?

View solution

0 like 0 dislike

3 views 0 answers

in Electrical Engineering

Is a power factor of 0.8 good?

Is a power factor of 0.8 good?
Answer : A power factor of 0.8 means that 80% of the power is being used effectively, and 20% is wasted. In many industrial or commercial settings, a power factor of 0.8 is considered okay but not ... not optimal. Aiming for a power factor closer to 1 is usually preferred for efficiency and cost savings....

View solution

0 like 0 dislike

5 views 1 answer

in Electrical Engineering

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.

View solution

0 like 0 dislike

3 views 0 answers

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

6 views 1 answer

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

6 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

7 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

4 views 0 answers

in Electrical Engineering

A workshop measures 10m × 25m. The shop is illuminated by 24 lamps of 200 watts each. The lumen efficiency of each lamp is 15 lumens per watt. Depreciation factor is assumed to be 0.8 and a coefficient of utilization 0.5. Determine the illumination on the working plane.

View solution

0 like 0 dislike

4 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

6 views 0 answers

in Electrical Engineering

Is 1-bit 0 and 1?

Is 1-bit 0 and 1?
Answer : Yes, a 1-bit can represent either a 0 or a 1. It's the most basic unit of data in computing and digital systems. In binary (the base-2 number system), the two possible values of a bit are 0 and 1, ... So when you hear "1-bit," think of it as a tiny piece of information that can either be 0 or 1....

View solution

0 like 0 dislike

8 views 1 answer

in Electrical Engineering

Is 0 a yes or no?

Is 0 a yes or no?
Answer : In many contexts, **0** is typically used to represent **no**, and **1** is used to represent **yes**. This is common in binary systems, where 0 and 1 are used to represent two possible states (off/on, ... So, in general, **0** is often associated with **no**, but it depends on how it's being used!...

View solution

0 like 0 dislike

5 views 1 answer

in Electrical Engineering

Is 0 true or false?

View solution

0 like 0 dislike

4 views 0 answers

in Electrical Engineering

What is 0.5 kW mean?

View solution

0 like 0 dislike

4 views 0 answers

in Electrical Engineering

Is 0 resistance possible?

View solution

0 like 0 dislike

3 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

8 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

3 views 1 answer

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

5 views 1 answer

in Electrical Engineering

Are diodes always 0.7 V?

View solution

0 like 0 dislike

4 views 0 answers

in Electrical Engineering

What is 0.01 uF capacitor?

What is 0.01 uF capacitor?
Answer : A **0.01 µF (microfarad) capacitor** is an electronic component used to store electrical charge. The **"µF"** stands for **microfarads**, where **1 µF = 1 millionth of a farad** ... ** is a small-capacitance component used in a wide range of electronic circuits for storing and filtering charge....

View solution

0 like 0 dislike

5 views 1 answer

in Electrical Engineering

Is voltage 0 if current is 0?

View solution

0 like 0 dislike

5 views 0 answers

in Electrical Engineering

Why is voltmeter 0?

View solution

0 like 0 dislike

5 views 0 answers

in Electrical Engineering

What does 0 ohms mean?

View solution

0 like 0 dislike

7 views 0 answers

in Electrical Engineering

What is the impulse function at t 0?

View solution

0 like 0 dislike

4 views 0 answers

in Electrical Engineering

What is the current in the RL circuit at a time t=0?

View solution

0 like 0 dislike

4 views 0 answers

in Electrical Engineering

How strong is a 0.5 tesla magnet?

View solution

0 like 0 dislike

3 views 0 answers

in Electrical Engineering

Is there an instantaneous change in the voltage across the capacitor at t 0?

Is there an instantaneous change in the voltage across the capacitor at t 0?
Answer : No, there is no instantaneous change in the voltage across a capacitor at \( t = 0 \). The voltage across a capacitor cannot change instantaneously due to the capacitor's inherent ... switch being turned on or off), the voltage across the capacitor will change gradually, not instantaneously....

View solution

0 like 0 dislike

6 views 1 answer

in Electrical Engineering

How does a capacitor behave at T=0?

View solution

0 like 0 dislike

5 views 0 answers

in Electrical Engineering

What is epsilon 0?

View solution

0 like 0 dislike

7 views 0 answers

in Electrical Engineering

What is the SI unit for epsilon 0?

View solution

0 like 0 dislike

2 views 0 answers

in Electrical Engineering

What does 0 hg mean on a battery?

What does 0 hg mean on a battery?
Answer : The "0 hg" label on a battery typically refers to "0 inches of mercury" (Hg), which is a way of measuring pressure in a vacuum or sealed environment. In the context of a battery, ... on a typical battery, it might be best to check the manufacturer's manual or datasheet for further clarification....

View solution

0 like 0 dislike

5 views 1 answer

in Electrical Engineering

Why is voltage always 0?

Why is voltage always 0?
Answer : Voltage is not always 0. However, if you're asking why voltage sometimes seems to be zero in certain situations, it could be due to a few reasons: 1. **Reference Point**: Voltage is always ... appear to be 0 in certain scenarios depending on where you're measuring and the condition of the circuit....

View solution

0 like 0 dislike

11 views 1 answer

in Electrical Engineering

Can resistance be 0 ohms?

View solution

0 like 0 dislike

4 views 0 answers

in Electrical Engineering

How can voltmeter read 0?

View solution

0 like 0 dislike

7 views 0 answers

in Electrical Engineering

What is 0.01 mm called?

What is 0.01 mm called?
Answer : 0.01 mm is called **10 micrometers (µm)**. In metric units: - 1 millimeter (mm) = 1,000 micrometers (µm) - So, 0.01 mm = 10 µm. Micrometer (µm) is a common unit used to measure very small distances or thicknesses....

View solution

0 like 0 dislike

7 views 1 answer