Electrical Engineering

An e-mosfet is and "enhancement" mosfet. A d-mosfet is a "depletion" mosfet. These essentially show what mode the mosfet operates in when a voltage is applied to the gate. . An enhancement mode mosfet is normally non-conducting but conducts when the channel is enhanced by applying a voltage to the gate and pulling carriers into the channel. A depletion mode mosfet normally conducts but becomes more and more non-conducting as carriers are depleted or pulled out of the channel by applying a voltage. The polarity of the voltage depends on whether it is an N channel or P channel. P channel uses positively doped silicon while N channel uses negatively doped silicon. N channel fets are used wherever possible because N material conducts better than P material. There are basically two types of fet, the jfet and the mosfet. The jfet uses a single junction to control the channel hence draws some current. Bipolar transistors use two junctions. In the mosfet (Metal Oxide Semiconducting Field Effect Transistor) there is no such junction hence draw so little current for control purposes it can be regarded as zero. The gate is isolated from the channel by a very thin layer of metal oxide (usually chromium dioxide). An enhacement mode mosfet can be turned on by applying a voltage then removing the wire to the gate. The channel will then remain conducting for some time.

This depends on the level of knowledge about building homemade generators. A stable homemade generator will run safety, while some generators built by non-professionals may be dangerous.

A: The power company must have trouble at the switch-yard to do that like a short or extreme loading. If there is a fault power management will know immediately because snitches will open and stay open. the operator will manually energize those switches 3 times to see if the fault can be cleared if not a crew will be sent to fix the problem. Sometimes some testing is necessary to find the problem so be patient time with no power means a lot of lost revenues mega $$

A hand held test meter is usually rated for 1000 volts.

Coils have the strange property that when electricity is released from them, they reverse polarity and spike the remaining current back towards the source.

The diode is there to "block" this from hitting the power supply and potentially causing damage.

V = ir
v = (0.5)(250)
v = 125

Offshore oil field

Use of rvt in capacitor bank

No.

Yes. This is the way small residential transfer switches connect the generator to the system. The breakers are bidirectional.

To eliminate the requirement for slip rings and brushes to handle the large voltage/current involved.

No. No load and short circuit is not similar.

No load can be 1) Either open circuit i.e. Only Potential is available and load is not connected 2) Load (i.e. motor etc ) is connected but not working with full load or full capacity. In this case the current will flow through the circuit depending on the load. It means No load condition is a condition where no current or a small ( relative / comparative term) current is flowing through the circuit.

In Short circuit the load side resistance/ impedance become so less that very high amount of current is passing through circuit.( The protection is therefor required for any circuit)

No load and and short circuit is not similar.

Thanks

The cost for an AC to DC power converter is usually around $15-$20. You can purchase an AC to DC Power converter online at the Amazon website. Once on the page, type "AC to DC Power Converter" into the search field at the top of the page and press enter to bring up the products.

It happened to me. My computer has a lot of errors that i cant even download stuff but try to download flash player?

If by "its own wire" you mean they are connected in parallel, then one bulb won't affect the others.

in 1973 the 460 was detuned (actually 1972) to 235 HP. But they also have hardened seats for the valves to run Unleaded fuels. If you purchase a 1969-1971 TIming set, you can bring the HP BACK!

In any transistor circuit , there is a phase shift. It takes a finite time for the controlling signal, usually on the base connection, to have an effect on the circuit and cause a change to the output. The shape of the signal remains but it is shifted in time (phase). The difference varies by configuration. It can be as much as180 degrees if the circuit is inverting the signal. The addition of passive components add to the shift.

To make a chip and implement it with a software program, you need to "burn" the program into the chip before it can work. You must use special chips, called programmable read only memory chips, commonly called PROMs, for this. It also requires special machinery to program the chips.

An injection substation is a substation where a higher voltage is stepped down to a lower voltage,especially for transmission in a densely populated area.The transformer involved is often in the MVA range,so that the output can serve a wide area,or large consumers. In Nigeria,the common injection stations are: 15MVA or 7.5MVA 33/11kv injection substations. An injection substation is a substation where a higher voltage is stepped down to a lower voltage,especially for transmission in a densely populated area.The transformer involved is often in the MVA range,so that the output can serve a wide area,or large consumers. In Nigeria,the common injection stations are: 15MVA or 7.5MVA 33/11kv injection substations.

1. Four prime numbers are written in ascending order of their magnitudes the product of the first three is 385 and that of the last three is 1001. The largest given prime number is

a. 11

b. 13

c. 17

d. 19

2. Mahavir deposited in the bank from Monday to Saturday the amounts of Rs. 87.80, Rs. 203.63, Rs. 3677.98, Rs. 92899.01, Rs. 66 and Rs. 554945.19 respectively. Find his total deposit for this week

a. Rs. 651879.61

b. Rs. 652779.61

c. Rs. 650879.51

d. Rs. 655889.71

3. Amar deposited in Vijay Bank Rs. 259206.16 on Monday. Rs. 201890.48 on Tuesday, Rs. 284.16 on Wednesday. He withdrew Rs. 50000.00 on Thursday. He again deposited Rs. 230.01 on Friday and Rs. 72.62 on Saturday. Find his total balance in the bank for this week

a. Rs. 501783.43

b. Rs. 501683.43

c. Rs. 511693.43

d. Rs. 511683.43

4. I was born on October 17, 1927. How old I was on Jan. 26, 1978?

a. 49 years and 101 days

b. 50 years and 100 days

c. 50 years and 101 days

d. 50 years and 103 days

5. Find the total of the following amount

Rs. 1230.79, Rs. 11368.08, Rs. 203.63, Rs. 10314.89, Rs. 64.8, Rs. 101.00 and Rs. 3677.98

a. Rs. 27961.1

b. Rs. 26961.17

c. Rs. 26951.17

d. Rs. 25961.17

6. How many pieces, each of length 4.5 m can be cut of 225 m of wire?

a. 40

b. 54

c. 56

d. 50

7. Parkash and Girish were travelling together. Prakash paid Rs. 200 for their stay in a hotel and Girish paid taxi fare of Rs. 80. If they have to share these expenses equally, then

a. Prakash should pay Rs. 60 to Girish

b. Girish should pay Rs. 120 to Prakash

c. Girish should pay Rs. 60 to Prakash

d. Prakash should pay Rs. 120 to Girish

8. Sum of the numbers from 1 to 20 is

a. 210

b. 110

c. 220

d. 105

9. Which of the following is equal to 115 x 15?

a. 105 x 10 + 115 x 5

b. 11 x 515

c. 1151 x 5

d. 110 x 15 + 5 x 15

10. The unit's digit in the sum (264)102 + (264)103 is

a. 0

b. 4

c. 6

d. 8

11. The smallest natural number by which the product of 3 consecutive even numbers is always divisible is

a. 16

b. 32

c. 48

d. 96

12. The number of prime factors of (6)10 x (7)17 x (55)27 is

a. 54

b. 64

c. 81

d. 91

13. The total income of Hazari and Murari is Rs. 3000. Hazari spends 60% of his income and Murari spends 80% of his income. If their savings are equal. Find the income of Hazari

a. Rs. 2000

b. Rs. 3000

c. Rs. 1500

d. Rs. 1000

14. Bholanath save 25% if his income, but due to dearness the expenses increased by 25%, still he saves Rs. 30. Find his income

a. Rs. 400

b. Rs. 480

c. Rs. 450

d. Rs. 475

15. In a city 40% of the people are illiterate and 60% are poor. Among the rich 10% are illiterate. What percentage of the poor population is illiterate?

a. 36%

b. 60%

c. 40%

d. None of these

Section - II

Mental Aptitude (Analytical Reasoning)

Directions (Q 1-5): Find the missing characters from the following series

1. ab _ a _ b _ a _ bba

a. aaab b. baba

c. abba d. baab

2. _ bc _ _ bb _ aabc

a. abab b. caab

c. acac d. aaab

3. cc _ a _ cabccb _ cca _ c _ ba

a. cbaba b. bacbc

c. bcabc d. abcbc

4. cba _ cb _ ccb _ c _

a. caac b. cbca

c. cbac d. cabc

5. AA _ cb _ AA _ _ bba _ ccb _

a. cabaac b. ababab

c. cbccab d. aaabca

6. If day before yesterday was Sunday then next Monday will be after ____ days.

a. 4 b. 5

c. 6

d. 7

7. If Sept 9 was Friday then the last Tuesday of the same Month will fall on

a. 25 b. 26

c. 27

d. 28

8. If the month of May begins on Sunday then the third Friday will fall on

a. 19 b. 20

c. 21

d. 22

9. If January 31 in a particular year falls on a Saturday then January 1 will be

a. Sunday b. Tuesday

c. Thursday d. Monday

10. At 6 PM the hour hand of a clock will point towards

a. North b. South

c. SW

d. SE

11. A boy walked 400 m north from his home, then he turned right and walked 100 m, then he turned left and walked 500 m. in which direction is he walking now

a. North b. South

c. NE

d. NW

12. A car starts from a point A. Then it moves 4 KM towards South. Then it turns right and moves 3 KM. How far is it from point A now.

a. 3 KM b. 4 KM

c. 5 KM d. 0 KM

13. 3, 10, 29, 66, _

a. 137

b. 127

c. 103

d. 218

14. 41, 29, 19, 11, _

a. 5 b. 6

c. 4

d. 3

15. ZXUQ : ACFJ : : NLIE : :

a. KMQT b. KMPU

c. LMPT d. KMPT

Online Books for Vizag Steel Plant Management Trainee Recruitment Exam

Answers

Section - I Quantitative Aptitude (Arithmetic)

1. b, 2. a, 3. d, 4. c, 5. b

6. d, 7. c, 8. a, 9. d, 10. b

11. a, 12. d, 13. d, 14. b, 15. a

Section - II Mental Aptitude (Analytical Reasoning)

1. b, 2. c, 3. c, 4. a, 5. c

6. c, 7. c, 8. b, 9. c, 10. b

11. a, 12. c, 13. b, 14. a, 15. d

Ecstatic

Thrilled

Overjoyed

Enthralled

Pleased

Fufilled

Gladdened

Jubilant

Pleasntly surprised

I believe you are referring to a piece of test equipment also known as a "function generator." It generates a voltage equal to some function of time. The most basic models will produce sine, square, and sawtooth waves at different frequencies, but the more expensive models will do all kinds of waves. these voltage time base generators are those which are used to generate voltage linearly with time. by using the transistor as a switch and using a capacitor we can get the ramp out put. here the working would be the capacitor charging when the transistor is off and discharging when the transistor is on. the discharging time is very less compared to the charging time. when the capacitor charges voltage across it increases exponentially and we get a wave which increases linearly with time.

A Restricted Earth Fault (REF) means an earth fault from a restricted/localized zone of a circuit.

The term "REF protection method " means not to sense any earth faults outside this restricted zone.

REF is a type of "unit protection" applied to transformers or generators and is more sensitive than the method known as differential protection.

An REF relay works by measuring the actual current flowing to earth from the frame of the unit. If that current exceeds a certain preset maximum value of milliAmps (mA) then the relay will trip to cut off the power supply to the unit.

Differential protection can also be used to protect the windings of a transformer by comparing the current in the power supply's neutral wire with the current in the phase wire: if the currents are equal then the differential protection relay will not operate; if there is a current imbalance then the differential protection relay operates. However, REF protection is also applied to transformers in order to detect ground faults on a given winding much more sensitively than differential protection can do.

Both the SFE and AGC are glass fuses with a meltable link within the glass. The SFE fuses all measure 1/4" in diameter. The length is determined by the amperage rating, which varies from 5/8" in length (4 amp.) to 1 7/16" in length (30 amp). The SFE fuse is also designated as "size rejecting" because the size differences are related to the amperage rating and tends to prevent interchanging different amperage ratings. The AGC fuse measures 1 1/4" in length and the diameter is 1/4" for all amperage ratings.