Interested to Buy Any Domain ? << Click Here >> for more details...
If a 1.5V,3W torch light bulb is connected in series with a
15HP/11.19KW,230V single phase motor and the combination is
connected against a 230V supply and switched on than what
will happen keeping all other parameters as it should be
A)the bulb will glow normally B)the bulb will not glow C)the
bulb will glow with extra brightness D)the bulb will burn
out and if a fuse is connected to the above circuit will
something happen to the fuse and what about the single phase
motor will it be affected?
Please explain with derivation
- 4 Answers
- 6851 Views
- I also Faced
- E-Mail Answers
Answer Posted / azam
Hay raj you are wrong man 11.19kw moter draws less than 20Amps
P=VICOSØ for single phase motor where V=230v and if we assume cosØ=0.85 then current drawn by motor is
I=P/VcosØ=11.19*1000watts/230v*0.85=57.23amps
And kndeed bulb. Cnnected in series will blow up like fuse wire due to 3 to 8 times starting current passing througt bulb.as bulb operating volage and ampacity is low.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
what is the difference between transformer,converter and transducer
Star Delta Diagram with full description
Enlists the applications of sampled data systems?
following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?
A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.
What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.
How to test REF relay testing for LV panel as per Kahramaa standard?
How to calculate MCB Breaking capacity.
what is method for testing CT
Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com
What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?
List the characteristics of filter?
During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP
What is pi controller?
I am going to appear for the RRB Chennai junior Engineer online exam. Please send me the previous exams question papers (also solved) to my mail id: rrkhandhar@yahoo.com
