Discuss
menu
search
person
Login
Register
search
edit
Ask a Question
Discuss
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Ask a Question
Is 50hz or 60hz better?
asked
Mar 10, 2018
by
anonymous
Is 50hz or 60hz better?
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.5k
views
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
0
Answers
← Prev Question
Next Question →
Related questions
asked
Jul 12, 2019
by
anonymous
Why INDIA has 50hz and USA has 60hz frequency cycle of current?
Last answer:
Because India uses 220-230volt In USA there they uses 110volt
thumb_up_alt
0
like
thumb_down_alt
0
dislike
5.0k
views
1
answer
asked
Oct 10, 2020
by
anonymous
Which field is better engineering or medical ?
Which field is better engineering or medical ?
Last answer:
I would say there is no better field than another. Both fields are kind of complementary in a way that engineering provides necessary materials to the medical field while the medical field provides hands to cure
thumb_up_alt
0
like
thumb_down_alt
0
dislike
84
views
2
answers
asked
Mar 10, 2018
by
anonymous
What is better computer engineering or software engineering?
What is better computer engineering or software engineering?
Last answer:
Computer Engineering have many parts in which one is software engineering, if your interest in software development then choose software engineering
computer
engineering
software
thumb_up_alt
0
like
thumb_down_alt
0
dislike
98
views
1
answer
asked
Mar 10, 2018
by
anonymous
Which is better Arduino or Raspberry Pi?
Which is better Arduino or Raspberry Pi?
better
arduino
raspberry
pi
thumb_up_alt
0
like
thumb_down_alt
0
dislike
54
views
0
answers
asked
Sep 18, 2017
by
anonymous
Which is better LED or LCD?
Last answer:
LED is better than LCD. LED have lots of advantages and LED have long span .
thumb_up_alt
0
like
thumb_down_alt
0
dislike
73
views
1
answer
asked
Mar 10, 2018
by
anonymous
Is more power dissipated in series or parallel?
Is more power dissipated in series or parallel?
power
dissipated
series
parallel
thumb_up_alt
0
like
thumb_down_alt
0
dislike
54
views
0
answers
asked
Mar 10, 2018
by
anonymous
What is double or reinforced insulation?
What is double or reinforced insulation?
double
reinforced
insulation
thumb_up_alt
0
like
thumb_down_alt
0
dislike
61
views
0
answers
asked
11 hours
ago
by
anonymous
The existence of a Parallel Economy or Black Money (1) makes the economy more competitive (2) makes the monetary policies less effective (3) ensures a better distribution of income and wealth (4) ensures increasing productive investment
The existence of a Parallel Economy or Black Money (1) makes the economy more competitive (2) makes the monetary policies less effective (3) ensures a better distribution of income and wealth (4) ensures increasing productive investment
Last answer:
makes the monetary policies less effective
economics
thumb_up_alt
0
like
thumb_down_alt
0
dislike
1
view
1
answer
asked
Jan 7
by
anonymous
A series combination of resistance 100 ohm and capacitance 50µf is connected in series to a 230 V, 50HZ supply. Calculate (i) Capacitive reactance (ii) Current (iii) Power factor (iv) Power consumed
A series combination of resistance 100 ohm and capacitance 50µf is connected in series to a 230 V, 50HZ supply. Calculate (i) Capacitive reactance (ii) Current (iii) Power factor (iv) Power consumed
Last answer:
For RC series circuit
electric
circuits
network
thumb_up_alt
0
like
thumb_down_alt
0
dislike
3
views
1
answer
asked
May 25, 2020
by
anonymous
An instantaneous value of an alternating voltage having 50hz frequency and max value of 100v at 0.01sec is
An instantaneous value of an alternating voltage having 50hz frequency and max value of 100v at 0.01sec is
thumb_up_alt
0
like
thumb_down_alt
0
dislike
32
views
0
answers
asked
Nov 12, 2018
by
anonymous
The inductance if a resistance with a rating of 100watts at 100volts is connected in series with a inductor across 220volts/50hz
thumb_up_alt
0
like
thumb_down_alt
0
dislike
96
views
0
answers
asked
May 25, 2018
by
anonymous
A 6-pole, 50Hz, 3-φ induction motor is running at 950 r.p.m. and has Cu loss of 5kW. The rotor input is
A 6-pole, 50Hz, 3-φ induction motor is running at 950 r.p.m. and has Cu loss of 5kW. The rotor input is (a) 10 kW (b) 95 kW (c) 100 kW (d) 9.5 kW
Last answer:
s=(Ns-N)/Ns =(1000-950)/1000=0.05.rotor cu.loss= s*rotor inputwe have rotor cu loss=5kWtherefore, rotor input= rotor cu.loss/s =5kW/0.05 =100 kW
thumb_up_alt
0
like
thumb_down_alt
0
dislike
5.5k
views
4
answers
asked
May 22, 2018
by
anonymous
If a 3-phase, 400V, 50Hz, 4 pole induction motor is running at a slip of 5% then the relative speed of rotor
If a 3-phase, 400V, 50Hz, 4 pole induction motor is running at a slip of 5% then the relative speed of rotor field with respect to stator filed is:
Last answer:
If a 3-phase, 400V, 50Hz, 4 pole induction motor is running at a slip of 5% then the relative speed of rotor field with respect to stator filed is: zero
thumb_up_alt
0
like
thumb_down_alt
0
dislike
188
views
1
answer
asked
Apr 28, 2018
by
anonymous
An 8-pole, 50Hz, three-phase induction motor is running at 705rpm and has a rotor copper loss of 5kW.
An 8-pole, 50Hz, three-phase induction motor is running at 705rpm and has a rotor copper loss of 5kW. Its rotor input is (A) 5.06 kW (B) 0.3 kW (C) 100 kW (D) 83.33 kW
Last answer:
An 8-pole, 50Hz, three-phase induction motor is running at 705rpm and has a rotor copper loss of 5kW. Its rotor input is 83.33 kW
induction
motor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
126
views
1
answer
asked
May 11, 2020
by
ali56789
A3-phase, 5.5kW, 440V, 50Hz, cylindrical rotor S.M has synchronous reactance of (0+j2) Ω/phase
A3-phase, 5.5kW, 440V, 50Hz, cylindrical rotor S.M has synchronous reactance of (0+j2) Ω/phase. When it is delivering its rated output the motor efficiency is 85% and load angle is 20º. Find the excitation voltage, armature current and the power factor
#machine
thumb_up_alt
0
like
thumb_down_alt
0
dislike
65
views
0
answers
asked
Mar 30, 2020
by
anonymous
Three coils ecah of impedance 25(-60°) are connected in dleta across 400V,3 phase, 50Hz supply. Draw phasor diagram
phasor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
41
views
0
answers
asked
Apr 28, 2018
by
anonymous
A 3-phase, 4-pole, 50Hz induction motor runs at a speed of 1440 rpm. The rotating field produced by the rotor
A 3-phase, 4-pole, 50Hz induction motor runs at a speed of 1440 rpm. The rotating field produced by the rotor rotates at a speed of ________ rpm with respect to stator field. (A) 1500 (B) 0 (C) 1440 (D) 60
Last answer:
0
induction
motor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
667
views
2
answers
asked
Apr 11, 2018
by
anonymous
A 400kW, 3 -phase, 440V, 50Hz induction motor has a speed of 950 rpm on full load. The machine has 6 poles. ...
A 400kW, 3 -phase, 440V, 50Hz induction motor has a speed of 950 rpm on full load. The machine has 6 poles. The value of slip for the machine will be (A) 0.06 (B) 0.10 (C) 0.04 (D) 0.05
Last answer:
A 400kW, 3 -phase, 440V, 50Hz induction motor has a speed of 950 rpm on full load. The machine has 6 poles. The value of slip for the machine will be 0.05
thumb_up_alt
0
like
thumb_down_alt
0
dislike
390
views
1
answer
asked
2 hours
ago
by
anonymous
What was the objective of Command Area Development Programme? (1) To ensure that land is given to the tillers (2) To ensure better utilisation of irrigation potential (3) To develop the areas under the command of Army (4) Poverty alleviation in selected areas
What was the objective of Command Area Development Programme? (1) To ensure that land is given to the tillers (2) To ensure better utilisation of irrigation potential (3) To develop the areas under the command of Army (4) Poverty alleviation in selected areas
Last answer:
To ensure better utilisation of irrigation potential
economics
thumb_up_alt
0
like
thumb_down_alt
0
dislike
1
view
1
answer
asked
1 day
ago
by
anonymous
A rising Per Capita Income will indicate a better welfare if it is accompanied by (1) unchanged Income distribution overall. (2) changed Income distribution in favour of rich. (3) changed Income distribution in favour of poor. (4) changed Income disribution in favour of Industrial Labour.
A rising Per Capita Income will indicate a better welfare if it is accompanied by (1) unchanged Income distribution overall. (2) changed Income distribution in favour of rich. (3) changed Income distribution in favour of poor. (4) changed Income disribution in favour of Industrial Labour.
Last answer:
changed Income distribution in favour of poor.
economics
thumb_up_alt
0
like
thumb_down_alt
0
dislike
1
view
1
answer
asked
1 day
ago
by
anonymous
Which of the following is a better measurement of Economic Development ? (1) GDP (2) Disposable income (3) NNP (4) Per capita income
Which of the following is a better measurement of Economic Development ? (1) GDP (2) Disposable income (3) NNP (4) Per capita income
Last answer:
Per capita income
economics
thumb_up_alt
0
like
thumb_down_alt
0
dislike
4
views
1
answer
asked
6 days
ago
by
anonymous
Explain why reception for high frequency band is better during night time.
Explain why reception for high frequency band is better during night time.
Last answer:
In sky wave propagation, the transmitted signal travels into the upper atmosphere where it is bent or reflected back to earth. This bending or reflection of signal takes place due to the presence ... reflected signal and hence the reception for high frequency band is better during night time.
principles-of-electronic-communication
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2
views
1
answer
asked
Jan 9
by
anonymous
Nandhini scored 996 marks out of 1200 marks and her elder brother kaviyarasan scored 1020 marks out of 1500 marks. Find the scored percentage which is better? a) 68% b) 83% c) 65% d) 85% e) 97%
Nandhini scored 996 marks out of 1200 marks and her elder brother kaviyarasan scored 1020 marks out of 1500 marks. Find the scored percentage which is better? a) 68% b) 83% c) 65% d) 85% e) 97%
Last answer:
Answer: A Percentage of marks scored by nandhini = (994/1200 × 100) = (99400/1200) = (994/12) = 83 % Percentage of marks scored by kaviyarasan = (1020/1500 × 100) = (102000/1500) = (1020/15) = 68 % Hence, the percentage marks scored by nandhini is better.
percentage
thumb_up_alt
0
like
thumb_down_alt
0
dislike
11
views
1
answer
asked
Aug 1, 2020
by
anonymous
Is iPhone better than android ?
Is iPhone better than android ?
thumb_up_alt
0
like
thumb_down_alt
0
dislike
23
views
0
answers
asked
Jul 21, 2020
by
anonymous
La Giaconda is better known as what
La Giaconda is better known as what
Last answer:
Mona Lisa
thumb_up_alt
0
like
thumb_down_alt
0
dislike
6
views
1
answer
asked
Jul 20, 2020
by
anonymous
What is Dick Grayson better known as
What is Dick Grayson better known as
Last answer:
Robin (Batman and Robin)
thumb_up_alt
0
like
thumb_down_alt
0
dislike
5
views
1
answer
asked
Aug 25, 2019
by
anonymous
Why is AC better for long distance power transmission than DC ?
Why is AC better for long distance power transmission than DC ?
Last answer:
ac is more economical to transmit for long distances . wires can be made smaller by step up transformer .. since major cost are wires to transmit .. then at the end of distance step down transformer is used for commercial use.
ac
long
distance
power
transmission
thumb_up_alt
0
like
thumb_down_alt
0
dislike
166
views
4
answers
asked
Jul 27, 2019
by
anonymous
State and justify which of the following two transformers is better: Transformer A = 4% voltage regulation Transformer B = 6% voltage regulation
State and justify which of the following two transformers is better: Transformer A = 4% voltage regulation Transformer B = 6% voltage regulation
Last answer:
Transformer A with 4% voltage regulation is better. Justification: Voltage regulation refers to the percentage change in secondary voltage when load is changed from no-load to full-load with primary voltage ... 4% voltage regulation, which is less as compared to 6% of transformer B, it is better.
transformer
thumb_up_alt
0
like
thumb_down_alt
0
dislike
101
views
1
answer
asked
Aug 11, 2018
by
nbattack
is it DC better than AC to transmit? explain it.
Do you think is DC better than AC to transmit energy?
Last answer:
In Long distance DC transmission will be better in cost. It requires more equipments for flexiblity In short distance AC transmission is better in cost. It is more Flexible
ac
dc
electricity
hvdc
facts
powersystems
thumb_up_alt
0
like
thumb_down_alt
0
dislike
447
views
2
answers
asked
May 12, 2018
by
anonymous
The transformer which transforms unbalanced line to a balanced line is better known as
The transformer which transforms unbalanced line to a balanced line is better known as (A) Impedance transformer (B) Amplifier (C) Balun (D) Oscillator
Last answer:
The transformer which transforms unbalanced line to a balanced line is better known as Balun
thumb_up_alt
0
like
thumb_down_alt
0
dislike
53
views
1
answer
asked
Apr 26, 2018
by
anonymous
An FET is a better chopper than a BJT because it has
An FET is a better chopper than a BJT because it has (A) lower offset voltage (B) higher series ON resistance (C) lower input current (D) higher input impedance
Last answer:
An FET is a better chopper than a BJT because it has lower offset voltage
fet
bjt
chopper
thumb_up_alt
0
like
thumb_down_alt
0
dislike
539
views
1
answer
asked
Apr 14, 2018
by
anonymous
What is the ratio of resistance and impedance better known as ?
What is the ratio of resistance and impedance better known as ? (A) Peak factor (B) Pitch factor (C) Power factor (D) Form factor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
55
views
0
answers
asked
Apr 11, 2018
by
anonymous
Power factor of running induction motor is better when
Power factor of running induction motor is better when (1) Running at half load (2) Full load (3) ¾ of load (4) None of the above
thumb_up_alt
0
like
thumb_down_alt
0
dislike
37
views
0
answers
asked
Apr 10, 2018
by
anonymous
An open-loop system is better than a closed-loop system in terms of
An open-loop system is better than a closed-loop system in terms of (a) Accuracy (b) Stability (c) Noise reduction (d) Sensitivity
thumb_up_alt
0
like
thumb_down_alt
0
dislike
51
views
0
answers
asked
Apr 10, 2018
by
anonymous
In terms of cost, overhead transmission line is better than underground transmission line in the field of
In terms of cost, overhead transmission line is better than underground transmission line in the field of (a) Insulation (b) Right of way (c) Visibility (d) None of these
thumb_up_alt
0
like
thumb_down_alt
0
dislike
49
views
0
answers
asked
Mar 31, 2018
by
anonymous
For making capacitors, it is better to select a dielectric having_________.
Last answer:
For making capacitors, it is better to select a dielectric having high permittivity.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
66
views
1
answer
asked
Mar 27, 2018
by
anonymous
For reducing tower footing resistance it is better to Use
For reducing tower footing resistance it is better to Use
Last answer:
For reducing tower footing resistance it is better to Use ground rod and counterpoise only.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
647
views
1
answer
asked
Mar 8, 2018
by
anonymous
Why the power factor of semiconverter is better than full converter?
Why the power factor of semiconverter is better than full converter?
Last answer:
Power factor of semiconverter is better than full converter
power
factor
semiconverter
better
full
converter
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.7k
views
1
answer
asked
Aug 22, 2017
by
anonymous
why arduino is better than other microcontroller ?
why arduino is better than other microcontroller ?
Last answer:
The reason is that the ardunio is the simple way of using the code language because it's resemble like c language and other microcontroller like rasberry pi used the python programming language.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
99
views
1
answer
asked
Jun 4, 2018
by
anonymous
The breakeven distance for HVDC transmission is
The breakeven distance for HVDC transmission is (A) 100 kM (B) 250 kM (C) 500 kM – 800 kM (D) Above 1000 kM
thumb_up_alt
0
like
thumb_down_alt
0
dislike
70
views
0
answers
asked
May 13, 2018
by
anonymous
Which of the following is TRUE with respect to HVDC transmission line?
Which of the following is TRUE with respect to HVDC transmission line? (A) For a short distance it is economical over HVAC. (B) In HVDC system, harmonics are not generated. (C) Use of HVDC can improve system stability. (D) Less and cheap terminal, equipments are required in HVDC.
Last answer:
Which of the following is TRUE with respect to HVDC transmission line? (A) For a short distance it is economical over HVAC. (B) In HVDC system, harmonics are not generated. (C) Use of HVDC can improve system stability. (D) Less and cheap terminal, equipments are required in HVDC.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
150
views
1
answer
asked
Apr 28, 2018
by
anonymous
A Unified Power Flow Controller (FACTS controller) is a voltage source converter based
A Unified Power Flow Controller (FACTS controller) is a voltage source converter based (A) Inter-phase power controller (B) Static Compensator (C) Combination of series and shunt compensators (D) Solid-state series compensator
Last answer:
A Unified Power Flow Controller (FACTS controller) is a voltage source converter based Combination of series and shunt compensators
unified
power
flow
controller
facts
thumb_up_alt
0
like
thumb_down_alt
0
dislike
81
views
1
answer
asked
Apr 28, 2018
by
anonymous
In voltage source converter based HVDC transmission system the active power is controlled by changing
In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals
Last answer:
In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage
voltage
source
converter
hvdc
transmission
system
active
power
controlled
thumb_up_alt
0
like
thumb_down_alt
0
dislike
98
views
1
answer
asked
Apr 9, 2018
by
anonymous
In the case of second order differential equation if the damping ratio is unity, then the poles are...
In the case of second order differential equation if the damping ratio is unity, then the poles are A) Equal, positive and real B) Imaginary and complex conjugate C) Equal, negative and real D) None of the above
thumb_up_alt
0
like
thumb_down_alt
0
dislike
173
views
0
answers
asked
Apr 9, 2018
by
anonymous
The effect of corona in high voltage a.c. transmission line is ...
The effect of corona in high voltage a.c. transmission line is A) Increased energy loss in the transmission line B) Increased line reactance C) Increased line to line capacitance D) All of the above
thumb_up_alt
0
like
thumb_down_alt
0
dislike
54
views
0
answers
asked
Apr 9, 2018
by
anonymous
A bus coupler circuit breaker is utilized in a sub-station for...
A bus coupler circuit breaker is utilized in a sub-station for A) Connecting the transmission line with the bus-bar B) Connecting two power transformers in parallel C) Connecting the bus-bar with ground D) Connecting main and transfer buses in the sub-station
thumb_up_alt
0
like
thumb_down_alt
0
dislike
42
views
0
answers
asked
Apr 9, 2018
by
anonymous
Back-to back connection is used in HVDC system to ...
Back-to back connection is used in HVDC system to A) Provide synchronous tie between two systems B) Provide bulk power transmission over long distance C) Provide asynchronous tie between two systems D) Reduce the line voltage drop and the transmission loss
thumb_up_alt
0
like
thumb_down_alt
0
dislike
51
views
0
answers
asked
Mar 10, 2018
by
anonymous
What is meant by flash over voltage?
What is meant by flash over voltage?
flash
over
voltage
thumb_up_alt
0
like
thumb_down_alt
0
dislike
53
views
0
answers
asked
Mar 10, 2018
by
anonymous
What is dielectric breakdown strength?
What is dielectric breakdown strength?
dielectric
breakdown
strength
thumb_up_alt
0
like
thumb_down_alt
0
dislike
55
views
0
answers
asked
Mar 10, 2018
by
anonymous
What is the difference between line and phase current?
What is the difference between line and phase current?
Last answer:
The currents flows through phase lines is called line voltage and currents flows from phase to neutral line is called phase current
difference
between
line
phase
current
thumb_up_alt
0
like
thumb_down_alt
0
dislike
90
views
1
answer
Install Now
...