Can you help by answering this question?

A device with slowest switching speed is ...

8 views
in Electronics communication by
As the thermal noise get doubled due to the increase in a resistance the noise power get. 

(A) doubled (B) quadruped (C) unchanged (D) halved.

1 Answer

0 votes
by

As the thermal noise get doubled due to the increase in a resistance the noise power get. unchanged 

Related questions

1 answer 8 views
2 answers 31 views

What happens to the resistance of a wire when its length as well as the cross-sectional area are doubled? A) It doubles B) It becomes 4 times C) It becomes 2π times D) It remains the same

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
2 answers 34 views

The fall in speed of a dc generator due to increase in load can be corrected by  (1) cooling the armature.. (2) increasing the excitation. (3) reducing the load voltage. (4) increasing the input to the prime mover

asked May 1, 2018 in Electrical Machine by Shimroz123
1 answer 51 views

In order to get maximum power transfer from a capacitive source, the load must? A.have a capacitive reactance equal to circuit resistance B.have an impedance that is the complex conjugate of the source impedance C.be as capacitive as it is inductive D.none of the above

asked May 15, 2018 in Basic concepts by Shimroz123
1 answer 12 views

In communication systems, noise due to quantization error is a) Linear and signal dependent b) Non-linear and signal dependent c) Linear and signal independent at low frequencies only d) non -linear and signal dependent at low frequencies only

asked Jun 15, 2018 in Electronics Engineering by Shimroz123
0 answers 25 views

In IC, transistors are utilised as diodes.To get highest breakdown voltage for such diode, it is adjusted to have  A) Ie=0 B) Ic=0 C) Vcb=0 D) Vce=0 

asked Apr 5, 2018 in Electronics Engineering by Shimroz123
1 answer 11 views

In a power transformer, the fundamental frequency of the hum arising due to magnetostriction is  (a) equal to the line frequency (b) double the line frequency (c) 4 times the line frequency (d) not related to the line frequency

asked May 15, 2018 in Transformer by Shimroz123
1 answer 29 views

Noise is primarily a variation in (A) Amplitude (B) phase (C) frequency (D) none of the above

asked May 12, 2018 in Electronics communication by Shimroz123
1 answer 37 views

If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 42 views

How does electricity get from the power plant to your home?

asked Mar 10, 2018 in Advanced electrical power system by Quiz
0 answers 27 views

The d.c. resistance of a conductor due to skin effect is (a) unchanged (b) decreased (c) increased (d) infinite 

asked May 25, 2018 in Power system by Shimroz123
1 answer 24 views

To get minimum harmonic distortion in the output, a 3-Ф to 3-Ф cyclo-converter requires :  (A) 12 SCRs (B) 18 SCRs (C) 36 SCRs (D) 72 SCRs

asked Apr 30, 2018 in Power Electronics by Shimroz123
1 answer 9 views

The thermal noise depends on  (A) direct current through device (B) resistive component of resistance (C) reactive component of impedance (D) load to connected.

asked May 17, 2018 in Electrical Engineering by Shimroz123
0 answers 371 views

Internal resistance of a micro-ammeter is 500 ohm. Shunt resistance required to increase its range from 0-100 µA to 0-10 A will be approximately (a) 0.05 Ω (b) 0.005 Ω (c) 0.5 Ω (d) 5.0 Ω

asked May 26, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 30 views

 Overall thermal efficiency of a steam power station in India is in the range: A) 18-24 percent B) 30-40 percent C) 44-62 percent D) 68-79 percent

asked Jun 17, 2018 in Electric Power Generation by Shimroz123
0 answers 19 views

The auxiliary power consumption in a thermal power plant is (A) 2-5% (B) 5-10% (C) 10-15 % (D) 15-20%

asked May 13, 2018 in Electric Power Generation by Shimroz123
1 answer 13 views

For a 210 MW, turbo-alternator in a thermal power plant, the possible specifications of rotor diameter, stator core length, and number of poles, respectively, are (A) 4.4 m, 1.2 m, 12 (B) 1.2 m, 4.4 m, 2 (C) 4.4 m, 1.2 m, 24 (D) 1.2 m, 4.4 m, 8

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
0 answers 30 views

The second break down in power BJT occurs due to (a) The first break down and the formation of hot spot inside (b) excessive collector current and low collector emitter voltage (c) excessive base current and high collector emitter voltage (d) none of thee above

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 41 views

The equipment installed in power plants to reduce air pollution due to smoke is (A) Induced draft fans (B) De -super heaters (C) Electrostatic precipitators (D) Re -heaters

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 16 views

When an antenna of input resistance 73 ohm is connected to a 50-ohm line and if the losses are ignored then its efficiency will be nearly   (A) 0.19 (B) 0.81 (C) 0.97 (D) 1.19

asked May 17, 2018 in Electronics communication by Shimroz123
1 answer 22 views

If the diameter of a conductor of 10 ohms is doubled, its new resistance would be? A.20 ohms B.5 ohms C.40 ohms D.2.5 ohms

asked May 15, 2018 in Basic concepts by Shimroz123
1 answer 24 views

When both the inductance and resistance of a coil are doubled the value of?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 13 views

Power transmitted through a pipe is maximum when the loss of head due to friction is : (A) one-half of the total head supplied (B) one-third of the total head supplied (C) one-fourth of the total head supplied (D) zero

asked Jun 14, 2018 in Mechanical Engineering by Quiz
1 answer 26 views

To increase power transfer capability of a long transmission line, we should:  (1) Increase line resistance (2) Increase transmission voltage (3) Decrease line reactance (4) Both (2) & (3)

asked May 22, 2018 in Electric Power Transmission by Shimroz123
1 answer 48 views

The overall efficiency of Thermal Power Plant is equal to _______________ .  (A) Regenerative Cycle Efficiency (B) Renkine Cycle Efficiency (C) Carnot cycle efficiency (D) None of the above

asked May 8, 2018 in Electric Power Generation by Shimroz123
1 answer 11 views

With the increase in the cross sectional area of the conductor, the value of resistance:  (1) Increase (2) Remain same (3) Decrease (4) None of these

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
0 answers 21 views

With the increase in the temperature the resistance of copper: _____ and explain why? (1) Increase (3) Remain constant (2) Become zero (4) Decreases.

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 4 views

Explain ash disposal and dust collection in a thermal power plant.

asked Sep 7, 2018 by Shimroz123
1 answer 27 views

In a thermal power plant, ash is collected in

asked May 3, 2018 in Electric Power Generation by Shimroz123
2 answers 51 views

The operation of the relay which is most affected due to arc resistance is A) Mho relay B) Reactance relay C) Impedance relay D) All are equally affected

asked Jun 4, 2018 in Switchgear And Protection by Shimroz123
1 answer 13 views

The ratio of maximum displacement of the forced vibration to the deflection due to static force is known as : (A) Damping Factor (B) Damping Coefficient (C) Logarithmic Decrement (D) Magnification Factor

asked Jun 14, 2018 in Mechanical Engineering by Shimroz123
1 answer 5 views

In order to increase the range of a voltmeter

asked May 15, 2018 in Electrical Measurements and Instrumentation by Shimroz123
0 answers 29 views

When two alternators A and B are operating in parallel, the increase in steam supply to alternator A will cause the active power output of (1) Alternator A to be decreased and alternator B to be increased (2) Alternators A and B is not affected (3) Alternators A and B is increased (4) Alternator A to be increased and alternator B to be decreased

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 14 views

Negative feedback amplifier has a signal corrupted by noise as its input. The amplifier will   (A) Amplify the noise as much as the signal (B) Reduce the noise (C) Increase the noise (D) Not effect the noise

asked May 17, 2018 in Amplifier by Shimroz123
1 answer 26 views

The noise produced by a transformer is termed as?

asked Mar 19, 2018 in Transformer by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units
...