Download nalko Placement Papers in MS Word and PDF Format for Job Interview

Aptitute: 60 Question
Technical: 60 Quetions

Time: 2 hrs 30 mins

Java:
Universal Programming Language, Supports Multithreading.
VSNL is purchased by
Tata
Reliance
Non of these
JK

Cache is used for : Static RAM
Dynamic RAM

Full form of PIF: Program Information File
What is the value of MSDN line
1MB
2MB
512 KB

Most of the questions are from the very basics of the Information Technology/ Computer Science and aptitute was also

from basic. So I am expecting very high cut off for the test.

GK questions:

1. Among the following cities, which one is at the highest altitude above mean sea level?
(a) Bangalore
(b) Delhi
(c) Jodhapur
(d) Nagpur

2. Who is the winner of "Rajiv Khel Ratna Award" in 2010?

3. Currency Of China?

4. How many deemed universities are de-recognised by the governatment in 2010?

Still some questions are there i didn,t remember those.

Technical questions: Some of the questions i remembered are

1. An ammeter is _________instrument
a) An indicating
b) An integrating
c) A recording
d) None of the above

2. The pointer of an indicating instrument is generally made of __________
a) Copper
b) Aluminium
c) Silver
d) Soft steel.

3. A transformer is an effeicient device because
a) Is a static device
b) Uses inductive coupling
c) Uses capactive coupling
d) Uses electric coupling

4. A transformer does not posses_________property
a) Impedance
b) Voltage
c) Current
d) Power

5. The synchronous speed of a 3-phase induction motor having 20poles and connected to a 50hz sorce is________
a) 600 r.p.m
b) 1000 r.p.m
c) 1200 r.p.m
d) 300 r.p.m

6. Most of sigle-phase induction motors are________machines
a) 2-pole
b) 6-pole
c) 8-pole
d) 4-pole

7. For the same rating.the size of a single-phase induction motor is about__________that of corresponding 3-phase nduction motor
a) 3 times
b) The same as
c) 1.5 times
d) 0.33 times

8. Turbo-alternators have rotors of________
a) Small diameter and long axial length
b) Large diameter and long axial length
c) Large diameter and smallaxial length
d) Same diameter and axial length

9. Damper winding in a synchronous motor________
a) Reduces windage losse
b) Serves to start the motor
c) Improves pf of the motor
d) Increases hunting of the motor.

10. The full-load slip of a syncronous motor is_______
a) 5%
b) 1%
c) 2%
d) 0

11. As a matter of economy.Voltage for power transmission should be
a) Low
b) Medium
c) High
d) None of the above

12.The term service mains refer to
a) Primary transmission
b) Secondary transmission
c) Primary distribution
d) Secondary distribution

13. Sag is provided in overhead lines so tht
a) Safe tension is not exceeded
b) Repair can be made
c) Conductor material is saved
d) None of above

14. A 3 wire dc distribution system makes available
a) One voltage
b) Two voltages
c) Three voltages
d) None of above

15.The distribution transformer is generally connected in
a) Delta/star
b) Delta/Delta
c) Star/Star
d) Star/Delta.

16.The most severe fault on the power system is
a) Three-phase short circuit
b) Line ti line fault
c) Double line to ground fault
d) Single line to ground fault

All questions are from."Objective electrical technology" bye V.K Mehta, Rohit Mehta.

But we can,t expect that they give the questions from above book that i mentioned next time. So please refer other books also.

NALCO PAPER ON 28TH OCTOBER 2007,DELHI


Hi friends,Here are the some of the technical questions posed in the NALCO exam for the post of Graduate engineering trainee on 28 oct. 2007 for Electrical branch. Out of 120 questions 60 technical questions, 60 non-tech questions and time duration was 2 and half hours.
1) rms value of AC current is equal to main current at an angle?
a) 60 b) 45 c) 30 d) 90
2) Corona produce in two transmission line if?
a) When both placed closed b) When both placed widely
c) Potential difference is very high d) I didn’t remembered
3) Diac is equal to?
a) Two diodes and two resisters b) Trice with two gates
c) Two thyristor connect in antiparallel d) four layer pnpn scr
4) In the Economic transmission point of view Kelvin’s gives?
A) Voltage drop at feeder b) transmission losses
Two more option I didn’t remember.
5) The essential condition for using servomotor for high torque at all?
a) Load b) speed
c) Voltage d) power
6) If torque of induction motor is 200n-m at slip 12%. What is the value of torque at slip 6%.....
a) 60n-m b) 40
c) 100 n-m d) 150
7) If speed of induction motor at full load is 950rpm then what is the speed at half load?
a) 1000 rpm b) 975
Two options I forget……
8) Find the value of ∫│cost +1/2│dt where limit is 0 to ∏/2
Option I didn’t remember.
9) What is the slope of –x3 + 6x2 + 2x +1=0?
Option I didn’t remember.
10) For the purpose of constant speed we use?
a) Brushless dc motor b) stepper motor
c) Shaded pole motor d) sync motor
11) Essential condition for parallel operation of 1phase transformer?
a) Rating b) Polarity
c) Impedance d) Voltage

12) Some of G.K. question
About placed of shriharikota space center.
13) Who did give the name of AL?
14) World literacy day?
15) World environment day?
16) If two heaters of 100W & 110 volt other are 150W & 110 volt connect in series with 220v ac source then what is the total power?
17) What is the GDP rate of India in 2005-06?
18) What is the % rate of production of Al in India?
a) 10 b) 20
c) 7 d) 14
19) One passes which have 4Qs
20) Some fill in blanks
21) One Q about the find the % of fifth harmonics in a current wave equation.
22) 4pole 3phase 50 htz induction motor running at 1460 rpm. What is the speed of running slip wrt to rotor?
23) Find the new kva rating of transformer which has 220 kva, 1watt iron loss and 2watt cu loss?
24) Hay’s bridge used for the measurement of?
25) In R-L-C parallel resonant circuit
a) Impedance is max. b) Resistance is min
Two more options I didn’t remember.
26) Two bulb 100w & 50w respectively with constant resistances connect in series with 220v dc source then what is the value of voltage across first bulb?
27) AC ammeter used for measurement in
a) Pmmc b) induction meter
c) Dynamometer d) moving iron type meter
28) For ac current we use?
Same option
29) We preferred V-V connection over T-T connection why?
30) Suspension type insulator is used when?
a) High voltage b) low voltage
c) Oscillating voltage d) steady voltage
31) One question based on Norton’s theorem?
32) One question based on inverted-V curve of synch motor.
33) One question based on load saturation curve.
34) There were 4 question like if A*B represent A is the son of B, some like that
35) Some questions from BAR-GRAPHS
36) Some questions from probability.
37) Some questions from Data–interpretation
38) Some questions from diodes.
39) One question from winding design for motor (find value of commutator segment)