A 3-kVA, 220:110-V, 60-Hz single-phase transformer yields this test data

open-circuit test: 200 V, 1.4 A, 50 W

short-Circuit test: 4.5 V, 13.64 A, 30 W

Determine the efficiency when the transformer delivers a load of 2 kVA at 0.85 power factor lagging.

Derive binding or ionization energy which is equal to energy : the donor energy level is approximately 0.1 ev below the conduction band. the approximate value is calculated from the binding energy equation from hydrogen. derive the binding or ionization energy which is equal to the total energy. |

Find the length of shorter of two sides of initial rectangle : A rectangle has an area of 33.66 cm2. When both the length and width of the rectangle are increased by 1.30 cm, find the length of the shorter of the two sides of the initial rectangle |

Compute the mass of each product formed : Calculate the mass of each product formed when 244 g of silver sulfide reacts with excess hydrochloric acid. Ag2S(s) + HCl(aq) -------> AgCl(s) + H2S(g) |

Determine the wave equations for all three regions : a) determine the wave equations for all three regions b) what is K for each region c) using matrix algebra, determine the coefficients to the wave eaquation in region 2 |

Determine the efficiency when the transformer delivers load : A 3-kVA, 220:110-V, 60-Hz single-phase transformer yields this test data open-circuit test: 200 V, 1.4 A, 50 W short-Circuit test: 4.5 V, 13.64 A, 30 W Determine the efficiency when the transformer delivers a load of 2 kVA at 0.85 power factor laggin.. |

The vapor pressure of ethanol and molar heat of vaporization : The vapor pressure of ethanol is 400 mmHg at 63.5 degree celsius. Its molar heat of vaporization is 39.3 kJ/mol. What vapor pressure of ethanol, in mmHg, at 34.9 degree celsius |

Find the density of the solvent : A cylindrical storage tank has a radius of 1.04 m. When filled to a height of 3.64 m, What is the density of the solvent |

Explain how to activate the control of operator : Identify five controls that require the operator to do two destict actions in order to activate the control? EXAMPLE depressing the clutch on a car so that the ignition key will start the car. |

Explain the bitter-tasting compound quinine is a component : The bitter-tasting compound quinine is a component of tonic water and is used as a protection against malaria. It contains only C, H, N and O. When a sample of mass 0.487 g was burned, 1.321 g of carbon dioxide, 0.325 g of water, and 0.0421 g of n.. |

## What value of the average signal power is required"Power Outage" refers to that the receive signal power falls below a certain threshold. Consider for a RF signal in a Rayleigh fading channel with average receive signal power 22 = - 80dBm. What will be the power outage probability of this channel.. |

## Find the zero input response as a function of timeConsider a series RL circuit with a voltage source. Take the output as the voltage across the resistor with L = 2 henrys and R = 4 ohms. (a) Find the zero input response as a function of time. The initial current is 2 A. |

## What is the particular solution for capacitance currentIn a series RC circuit, R = 5 Ohms and C = 0.1F. The capacitor voltage is 10 volts at t=0. At t=0, a voltage of 4V is applied. a) Determine the total capacitance voltage and capacitance current as a function time after the external voltage is applied.. |

## What is the combined gain-loss of the two cascaded blocksAn amplifier has a gain of 10 and follow a bandpass filter filter where the loss in the in the center of the bandpass is 0.05. What is the combined gain/loss of the two cascaded blocks at the center frequency of the filter |

## What is the maximum effective data rate of the linkConsider a satellite communication link with a one way propagation delay of 300ms between the sender and receiver, operating at 10Mbps using packets of length 1500bytes. Length of the ACK packet is also 1500 bytes. |

## Find matrix representation of the differentiation operationThe purpose of this problem is to show you the connection between Fourier series and linear algebra. For simplicity, we will consider a finite basis. All questions will be referred to the following basis B = {1, sin(400t), cos(400t), sin(800t), cos.. |

## What is the main cause of bit errors on this digital linkWhat is the main cause of bit errors on this digital link? At the receiver, what is the rule that is used to decide whether to output a 1 or a 0? |

## Calculate the traffic load per cellThe system uses a 7-cell reuse pattern. If the offered traffic per user is 0.03 Erlangs and the average number of calls per hour per user is 1.5, for an Erlang-C system with a probability of delaying a call being 5%, calculate the traffic load per.. |

## What are individual drift and diffusion components of holegiven the electron and hole concentrations for a 2 micro meter region of Silicon. At x=0 the concentration of electrons is 10^16 and the concentration of holes is 1.01x10^18. At x=2 micro meters the concentration of electrons is 10^4 |

## Determine what is the power level nano wattsConsider a product data sheet for a photo-detector that states an optical power level of -32dbm is need at the photo-detector to specify performance requirement. What is the power level nW (nano Watts) |

## What is going to happen if pump speed is increase to 1560rpmYou balanced a pump impeller by placing a 5 gram weight at a radius of 100 mm. The original vibration amplitude was 10 mm/s, and after adding the balancing weight, the vibration is 1 mm/s. The speed of the pump is 1500 rpm and the weight of the im.. |

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