Description : Ohm’s law is applicable to : (A) Semi-conductors (B) Vacuum tubes (C) Electrolytes (D) Semiconductors and Vacuum tubes

Description : why ohm's law is not applicable for ac circuit?

**Answer** : We can use Ohm's law for AC circuit if circuit consists of linear components and devices.

Description : Fifth generation computers do not have : (1) Speech recognition (2) Artificial intelligence (3) Very large scale integration (4) Vacuum tubes

**Answer** : Vacuum tubes

Description : Kirchhoff's current law is applicable to 1. Closed loops in a circuit 2. Junction in a circuit 3. Magnetic circuits Which of the above is/are correct ? (a) 1 only (b) 2 only (c) 3 only (d) 1, 2 and 3

**Answer** : Kirchhoff's current law is applicable to 1. Closed loops in a circuit 2. Junction in a circuit 3. Magnetic circuits Which of the above is/are correct ? (a) 1 only (b) 2 only (c) 3 only (d) 1, 2 and 3

Description : According to Ohm's law: (1) The voltage is constant to current (2) The voltage is proportional to current (3) Voltage is inversely proportional to current (4) The voltage is proportional to resistance

**Answer** : At constant temperature current passing through a conductor is directly proporstional to voltage across a conductor

Description : does ohm's law apply to ac circuits?

**Answer** : Yes it does, but as it is supplied with ac we will have to take impedance in account.

Description : Explain Dalton's law of partial pressure. How it is applicable to condenser?

**Answer** : It states that' The pressure exerted by mixture of air and steam is equal to sum of partial pressures, which each constitute would exert, if it occupies the same volume . In condenser total ... mixture of air and steam Pa = Partial pressure of air Ps = Partial pressure of steam

Description : Kirchhoff s law is not applicable to circuits with?

**Answer** : Kirchhoff's law is not applicable to circuits with distributed parameters.

Description : Kirchhoff s law is applicable to?

**Answer** : Kirchhoff s law is applicable to both a.c. as well d.c. circuits.

Description : Kirchhoffs current law is applicable to only?

**Answer** : Kirchhoffs current law is applicable to only junction in a network.

Description : State Ohm’s law for electric circuit.

**Answer** : Ohms law -States that the current flows in a circuit is directly proportional to the applied voltage (V) and inversely the proportional resistance provided with the temperature main constant

Description : Does the linear circuit obey Ohm's law?

**Answer** : Yes linear circuit obey Ohm's law and nonlinear circuit not satisfied Ohm's law.

Description : State and explain Ohm’s law.

**Answer** : Ans: Ohm's law: As long as physical conditions (such as dimensions, pressure and temperature) are constant, the potential difference or voltage applied across the conductor is directly proportional to ... V/R where, R = constant of proportionality, called as the resistance of the conductor.

Description : The Kirchoff's law for a.c. is applicable upon consideration of - a) Phasor sum b) Algebraic sum c) Progression sum d) Linear sum

**Answer** : The Kirchoff's law for a.c. is applicable upon consideration of - Phasor sum

Description : The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: (1) Avogadro’s law (2) Rault’s law (3) Ohms law (4) Faraday’s law

**Answer** : Ohms law

according to ohms law voltage directly proportional to current but it is reverse in transformer why?

Description : About trnsformer

**Answer** : Acc to Ohms law V=IR but it is only applicable when our resistance R is constant, as in case of transformer we take impedence which is equivalent to resistance is not constant it varies with system parameters that why Ohms law not applicable in case of transformer

Description : Which one of the following laws best describes the operation of an electric generator? w) Ampere's Law x) Gauss' Law y) Ohm's Law for Conductors z) Faraday's Law of Induction

**Answer** : ANSWER: Z -- FARADAY'S LAW OF INDUCTION

Description : What law describes the force between two stationary electrically charged objects? w) Ampere's law x) Coulomb's law y) Kirchoff's Rules (pron: kir-koff rules) z) Ohm's law

**Answer** : ANSWER: X -- COULOMB'S LAW

Description : Induced electric currents can be explained using which of the following laws? w) Gauss's Law x) Faraday's Law y) Ohm's Law z) Ampere's Law

**Answer** : ANSWER: X -- FARADAY'S LAW

Description : The force acting between two point charges can be computed using which of the following laws? w) Ohm's Law x) Ampere's Law y) Coulomb's Law z) Newton's Second Law.

**Answer** : ANSWER: Y -- COULOMB'S LAW

Description : Define charging, discharging, specific resistance and Ohm’s law.

**Answer** : Charging:- It is the operation of the cell in which external source of current reverses the electrochemical cell reaction in order to restore the battery to its original fully charged state. ... across the conductor & inversely proportional to the resistance (R) of a conductor.

Description : Ohm’s law is valid in case of (1) semiconductor (2) conductor (3) superconductor (4) insulator

**Answer** : conductor

Description : State and explain Ohm's law for magnetic circuit.

**Answer** : Ohm's law for electric circuit is V = I R where V is voltage, I is current, R is Resistance. Ohm's law for magnetic circuit is MMF = Φ X S where MMF is magnetomotive force (NI) ... . Resistance is the opposition to the flow of current while reluctance is the opposition to the flow of magnetic flux.

**Answer** : If the resistance of a conductor does not vary in accordance with Ohm's law it is known as non-linear conductor

Description : The condition for the validity under Ohm's law is that?

**Answer** : The condition for the validity under Ohm's law is that resistance must be uniform.

Description : Which ofthe following theorem is applicable for both linear and non-linear circuits? A) Superposition theorem B) Thevenin’s theorem C) Norton’s theorem D) None of these

Description : In general AC distribution systems, arc interruption in vacuum circuit breakers are designed to function in a time period of (a) One cycle (b) Two to three cycles (c) Within ten cycles (d) None of the above

**Answer** : In general AC distribution systems, arc interruption in vacuum circuit breakers are designed to function in a time period of One cycle

Description : I will be describing a chemical element. Try to identify it with the fewest number of clues. This chemical element is the most abundant of the rare-earth group. The element is a silver-gray metal ... factor in color television tubes. The atomic number of this element is 58. What is this element?

**Answer** : ANSWER: CERIUM (Ce)

Description : One tube can fill a tank five times as fast as another tube. If together the two tubes can fill tank in 42 min, then the slower tube alone will be able to fill the tank in? A) 252 min B) 208 min C) 244 min D) 192 min

**Answer** : A Let the slower tube alone fill the tank in x min. Then, faster tube will fill it in x/5 min. 1/x + 5/x = 1/42 6/x = 1/42 => x = 252min.

Description : Three tubes A, B and C can fill a tank in 12hours. After working at it together for 4 hours, C is closed and A and B can fill the remaining part in 12 hours. The number of hours taken by C alone to fill the tank is A) 32hrs B) 30hrs C) 38hrs D) 36hrs

**Answer** : D A+B+C in 1h = 1/12 A+B+C in 4h = 4/12 = 1/3 Remaining = 1-1/3 = 2/3 A+B in 12hrs = 2/3 A+B in 1hr = 2/36=1/18 C alone to fill the tank= 1/12– 1/18 = 3-2/36= 1/36=36hrs

Description : A dumper is filled in 15hrs by 3 tubes P,Q,and R. the tube R is thrice as fast as Q and Q is thrice as fast as P. How much time will tube Q alone take to fill the tank? A) 195hrs B) 190hrs C) 185hrs D) 180hrs

**Answer** : A Suppose tube P alone takes x hrs to fill the tank Then tubes Q and R will take x/3 and x/9 hrs respectively to fill the dumper. Therefore 1/x + 3/x+ 9/x = 1/15 13x = 1/15 X = 195 hrs

Description : A tube can fill a cistern in 18hrs.After half the cistern is filled, three more similar tubes are opened. What is the total time taken to fill the cistern completely ? A) 9hrs 52min B) 10hrs 15 min C) 9hrs 45 min D) 10hrs 30min

**Answer** : D Time taken to fill the half cistern = 18/2 = 9 hrs Remaining part = 1/2 Time taken to fill the remaining part = [1/(4×1/12)] ×(1/2) = 3/2hrs 3/2 hrs = 90 min = 1hr 30mints Total time = 9hrs+90 min = 10hrs 30mins

Description : A galvanometer of resistance 40 ohms requires a current of 10mA to give a full-scale deflection. A shunt is put in position to convert it to a meter reading up to 1.0A full-scale ... across the bobbin and the meter, calculate the voltage which would produce full-scale deflection of the meter.

Description : A 6V zener diode is used to provide voltage regulation with a series resistance of 100 Ohms and supply voltage is 12V. When under no load the power dissipated in the zener diode is (a) 60mW (b) 36mW (c) 360mW (d) 3600mW

**Answer** : Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is 4 r.

Description : What is the value of susceptibility in case of vacuum? A) 1 B) 0.5 C) ∞ D) 0

**Answer** : What is the value of susceptibility in case of vacuum? A) 1 B) 0.5 C) ∞ D) 0

Description : Relative permeability of vacuum is?

**Answer** : Relative permeability of vacuum is 1.

Description : what is vacuum tube?

**Answer** : A vacuum tube is a tube with no air particles.

Description : When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as

**Answer** : When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as – Heterofertilization

Description : The form of the fuel in U.S. commercial nuclear power plants is which of the following: w) uranium oxide ceramic pellets x) atomic vapor y) uranium metal tubes z) uranium solution in water

**Answer** : ANSWER: W -- URANIUM OXIDE CERAMIC PELLETS

Description : In surface condensers write role of (i) Water tubes (ii) Shell (iii) Baffle plate (iv) Tube sheet

**Answer** : Function of parts in surface condensers 1. Water tubes- Cooling water flows through it , for convective heat transfer to occur with steam outside the tubes 2. Shell- Outer body, all components are ... and improves heat transfer 4. Tube sheet- All tubes are supported at the end in tube sheet

Description : In test-tube babies, the (1) Ovum is fertilized and developed in test-tubes (2) Ovum is fertilized in the testtubes and developed in uterus (3) Ovum is fertilized in the uterus and developed in testtubes (4) Ovum is developed without fertilization in test-tubes

**Answer** : Ovum is fertilized in the testtubes and developed in uterus

Description : Accupuncture is (1) a disease of heart (2) servicing of tubes and tyres (3) a treatment method with needles (4) a crop culture

**Answer** : a treatment method with needles

Description : The coloured discharge tubes for advertisement mainly contain (1) Xenon (2) Argon (3) Helium (4) Neon

**Answer** : Neon

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