Recent questions tagged a

Description : Write a note on ATP?  

Last Answer : ATP is abbreviation of adenosine tri-phosphate. Composition: - It is made up of three-phosphate group. Adenosine is formed of nitrogenous base (adenine) and sugar (ribose). In ATP three- ... broken down a large amount of energy is released which is used in different activities of organism.  

Description : Lewis PLC is breaking down and classifying costs to determine which are associated with specific marketing activities. Lewis is performing a A)marketing cost analysis. B)sales analysis. C)marketing audit. D)cost audit. E)variable cost analysis.

Last Answer : A)marketing cost analysis.

Description : Dissociative anaesthesia’ is produced by: A. Ketamine B. Fentanyl C. Propofol D. Both ‘A’ and ‘B’ are correct

Last Answer : Ketamine is the preferred anaesthetic for the following except: A. Hypertensives B. Trauma cases who have bled significantly C. Burn dressing D. Short operations on asthmatics

Description : Illustrate with neat wiring diagram a single lamp control by two point method.

Last Answer : Single lamp control by two point method:  This system is commonly used for stair case wiring. It consists of two way switches (the switch operates always in one of the two possible positions) the ... the person will change the position of switch S2, so that the lamp will be switched OFF'.

Description : What is PLL? Explain its operation with a block diagram.

Last Answer : PLL - A phase-locked loop or phase lock loop is a control system that generates an output signal whose phase is related to the phase of an input signal Block diagram  ... to the input frequency. The phase - locked loop goes through three states free running capture and phase lock.

Description : Draw block diagram of PLL as a FM demodulator. Explain function of each block.

Last Answer : Operation:  The FM signal which is to be demodulated is applied at the input of the PLL.  the PLL is locked to the FM  The error voltage produced at ... using PLL ensures a high Linearity, between the instantaneous input frequency and VCO control voltage (error amplifier output)

Description : With a neat sketch give the working of shaded pole induction motor.

Last Answer : Explanation: It has squirrel cage rotor and salient pole stator. The stator poles are shaded partially by short circuited conductor band to create the phase difference between the fluxes emerging from shaded ... rotating magnetic field in the air-gap and torque is exerted on the squirrel cage rotor.

Description : A parallel RLC circuit has the node equation Determine v(t) using the phasor method.

Last Answer : A parallel RLC circuit has the node equation Determine v(t) using the phasor method.

Description : The loop equation for a series RLC circuit gives

Last Answer : The loop equation for a series RLC circuit gives

Description : Source transformation Replace the circuit with voltage source in series with a single resistor

Last Answer : Source transformation Replace the circuit with voltage source in series with a single resistor

Description : Class A Load Commutation

Last Answer : Class A: Load Commutation: The class A or load commutation (also called self-commutation or resonant commutation) is employed in thyristor circuits supplied from DC source. The commutating components include ... biased. Thus the zero-current and reverse-bias cause the thyristor to turn-off. 

Description : Why does the speed of a DC shunt motor decrease as the load increases?

Last Answer : Because if the load is increasing then the torque must also be increase. If not then the speed of motor will decrease.

Description : Which is a semiconductor: copper, silicon, or neon?

Last Answer : Copper is a metal. Silicon is a semiconductor. Neon is inert gas.

Description : A charge of 0.1 C moves past a given point every 0.01 s. How much is the current?

Last Answer : The current is 10.0A.  1ampere = 1 Coulomb per 1 second.  0.1Coulombs ÷ 0.01seconds = 10.0amperes.

Description : Is the power line voltage available in our homes a dc or an ac voltage?

Last Answer : The power line voltage available in our homes is AC. Mobile dwellings are the most commonly DC-supplied homes and even then they tend to include AC supply for heavier loads.

Description : Describe the difference between an open circuit and a short circuit.

Last Answer : Open circuit means the wire is cut meaning power will not flow and close circuit means wire is not cut and hence power will flow.Short circuit is the same as close circuit

Description : How does the resistance of a conductor compare to that of an insulator?

Last Answer : The resistance of a conductor can be significantly lower than the resistance of an insulator, depending on each material's atomic properties.

Description : What is the smallest unit of a compound with the same chemical characteristics?

Last Answer : The molecule is the smallest unit of a compound with the same chemical characteristics.

Description : In a metal conductor, what is a free electron?

Last Answer :  When many atoms are close together in a copper wire, the outermost orbital electron of each copper atom can easily break free from its home or parent atom. These electrons then can migrate easily ... random. Such electrons that can move freely from one atom to the next are called free electrons.

Description : Instantaneous value of a sine wave voltage

Last Answer : Instantaneous value of a sine wave voltage

Description : How do you find power in a circuit?

Last Answer : Power can be find in a circuit by the means of meters .if an individual want to check for a power in a circuit he/she Calabria the meters on a high voltage range and put the meters Lee in parallel with the circuit he /she will know the amount of power within that circuit .