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Mnc India Placement Papers
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Latest ABB Placement Papers
11. A sync. Motor is running at synch. Speed, if al of sudden D.C. excitation is removed, then
(a) it will rotate at slip speed, (b) it will stop, (c) it will continue to rotate at sync. Speed
Ans: (a), because actually it will acts as Induction motor.
12. A transmission line is designed for 50Hz, 440KV. If we want to transfer power at 60Hz, 440 KV, then the power transfer capability will
(a) decrease, (b) Increase, (c) None
Ans: (a) ...as P=( |Vt| |Ef| sin (delta) ) / X, where (delta) is torque angle.
13. Increased rotor resistance in rotor ckt of induction motor is related with
(a) high starting torque, (b) more speed variation,.....................Ans: (a)
14. In the formulae E = 4.44 f N Ô, Ô is
(a) Avg value, (b) Rms value, (c) Maximum value.....................Ans: (a)...[confirm it]
15. Voltage & current in a ckt is given by V= V1+j V2 and I= I1 +j I2, then rms power is.......(refer book by Administrator on NETWORK ..)
16. Input impedence of MOSFET is
(a) more than BJT........(Ans)
17, 18. Remember truth table of AND, NOR, NAND, OR, EX-OR ETC...
19. Conversion of Binary number into Equivalent decimal No.
20. Megger is used for the measurement of (a) Insulation resistance, (b)Conductor resistance.............Ans: (a)
21. Form factor for sinusoidal as well as DC
22. Formulae of Regulation (Vs- Vr)* 100/ Vr, then transmission line is
(a) short transmission line, (b) long, ( c) medium...................Ans: (a)
23. Improvement in power factor reduces
(a) power consumed by consumer, (b) power generation, (c) both a & b...........Ans: (c) [Confirm it]
24. Read about field test of Series Motor...
25. No-load test for Synchronous motor, the graph is drawn
(a) stator open ckt emf Vs field current.......................................(Ans: a)
26. An AC voltage of 50Hz is impressed in a resistive ckt, the oscillating power has a frequency (a) 50 Hz, (b) 100, (c) no oscillating power is there in resistive ckt......Ans: (a)
27. Insulation used in transformer ___________leakage flux.
(a) increases, (b) decreases............Ans: (b)
28.After rain what happens to Insulator (a) break-down strength of Insulator decreases, (b)Arch length reduces, ......Ans: (b)..[Confirm it]
29.Diversity factor helps to ............(what ?) [Read diversity factor, load factor, Reserve capacity factor in depth, with calculation]
30. Why capacitance is shown as a Shunt element in analysis of transmission line
(a) it is between Conductor & earth, (b) because Admittance is used for calculation of capacitive reactance.....................Ans: (a)
31. B-R-Y sequence is followed in three phase system, if phase voltage in B-phase is Vm sin 100, then the phase voltage in R-phase would be (a) Vm sin (-20) Ans:(a)
32. In a particular ckt I = Im Sin (wt -270) and V = Vm Sin wt, then type of ckt is (a) pure resistive ckt
33. In a L-R ckt energy lost = 2000 W, energy conserved = 500W, then what is the time constant...........Ans: time constant = L/R = 0.5
34. In electro-dynamometer A,meter & wattmeter the type of scale is
Ans:Non-uniform
35. For the same current carrying capacity corona loss of ACSR will be ________than copper conductor.
(a) more, (b) less, (c) equal. Ans: (b)
36. A R-C ckt , supplied with DC, a bulb is connected across the Capacitor, then what happens to the illumination, if we change the capacitance.
Ans: No change at all
37. Read about surge impendence of over-head and under-ground cable, Surge impedence formula = sqrt(L/C)
[N.B] We are not mentioning the options in sequence, and do not think that ans for the most questions is option (a). Read all options very carefully as all are very close to each other.Back
Tuesday, August 4, 2009
Sample Paper II
Sample Paper:
21. What does the statement int(*x[])() indicate?
22. Which addressing mode is used in the following statements:
(a) MVI B,55
(b) MOV B,A
(c) MOV M,A
Ans.
(a) Immediate addressing mode.
(b) Register Addressing Mode
(c) Direct addressing mode
23. RS-232C standard is used in _____________. Ans. Serial I/O
24. How are parameters passed to the main function?
25. What does the file stdio.h contain?
a) functin definition
b) function decleration
c) both func. defn & func. decleration.
26. sscanf is used for ?
27. Memory. Management in Operating Systems is done by
a) Memory Management Unit
b) Memory management software of the Operating System
c) Kernel Ans: (b)
28. What does the statement strcat(S2,S1) do?
29. TCP(Transmission Control Protocol) is Connection Oriented and used in ______________ layer?
30. IP(Internet Protocol) is connectionless and used in _________________ layer?
31. For LAN Netwrok layer is not required. Why?
32. What is done for a Push opertion? Ans: SP is decremented and then the value is stored.
33. Describe the following structures as LIFO/FILO/FIFO/LILO (a) Stack (b) Queue
21. What does the statement int(*x[])() indicate?
22. Which addressing mode is used in the following statements:
(a) MVI B,55
(b) MOV B,A
(c) MOV M,A
Ans.
(a) Immediate addressing mode.
(b) Register Addressing Mode
(c) Direct addressing mode
23. RS-232C standard is used in _____________. Ans. Serial I/O
24. How are parameters passed to the main function?
25. What does the file stdio.h contain?
a) functin definition
b) function decleration
c) both func. defn & func. decleration.
26. sscanf is used for ?
27. Memory. Management in Operating Systems is done by
a) Memory Management Unit
b) Memory management software of the Operating System
c) Kernel Ans: (b)
28. What does the statement strcat(S2,S1) do?
29. TCP(Transmission Control Protocol) is Connection Oriented and used in ______________ layer?
30. IP(Internet Protocol) is connectionless and used in _________________ layer?
31. For LAN Netwrok layer is not required. Why?
32. What is done for a Push opertion? Ans: SP is decremented and then the value is stored.
33. Describe the following structures as LIFO/FILO/FIFO/LILO (a) Stack (b) Queue
Sample Paper I
Sample Paper:
11 What is the nominal voltage required in subscriber loop connected to local exchange?
a) +48 volts
b) -48 volts
c) 230 volts
d) 110 volts
12. To send a data packet using datagram , connection will be established
a) before data transmission.
b) connection is not established before data transmission.
c) no connection is required.
d) none of the above. Ans: (c)
13. Word allignment is
a) alligning the address to the next word boundary of the machine.
b) alligning to even boundary.
c) alligning to word boundary.
d) none of the above. Ans: (a)
14 When a 'C' function call is made, the order in which parameters passed to the function are pushed into the stack is
a) left to right
b) right to left
c) bigger variables are moved first than the smaller variales.
d) smaller variables are moved first than the bigger ones.
e) none of the above. Ans: (b)
15 What is the type of signalling used between two exchanges?
a) inband
b) common channel signalling
c) any of the above
d) none of the above. Ans: (a)
16. Buffering is
a) the process of temporarily storing the data to allow for small variation in device speeds
b) a method to reduce cross talks
c) storage of data within transmitting medium until the receiver is ready to receive.
d) a method to reduce routing overhead. Ans: (a)
17. A protocol is a set of rules governing a time sequence of events that must take place between
a) peers
b) non-peers
c) allocated on stack
d) assigned to registers.
18. Memory allocation of variables declared in a program is
a) allocated in RAM.
b) allocated in ROM.
c) allocated on stack.
d) assigned to registers. Ans: (c)
19. A software that allows a personal computer to pretend as a computer terminal is
a) terminal adapter
b) bulletin board
c) modem
d) terminal emulation Ans: (d)
The following questions (Q20-Q33) are of a slightly different pattern than those above and may also be asked:
20. Find the output of the following program
int *p,*q;
p=(int *)1000;
q=(int *)2000;
printf("%d",(q-p));
Ans: 500
11 What is the nominal voltage required in subscriber loop connected to local exchange?
a) +48 volts
b) -48 volts
c) 230 volts
d) 110 volts
12. To send a data packet using datagram , connection will be established
a) before data transmission.
b) connection is not established before data transmission.
c) no connection is required.
d) none of the above. Ans: (c)
13. Word allignment is
a) alligning the address to the next word boundary of the machine.
b) alligning to even boundary.
c) alligning to word boundary.
d) none of the above. Ans: (a)
14 When a 'C' function call is made, the order in which parameters passed to the function are pushed into the stack is
a) left to right
b) right to left
c) bigger variables are moved first than the smaller variales.
d) smaller variables are moved first than the bigger ones.
e) none of the above. Ans: (b)
15 What is the type of signalling used between two exchanges?
a) inband
b) common channel signalling
c) any of the above
d) none of the above. Ans: (a)
16. Buffering is
a) the process of temporarily storing the data to allow for small variation in device speeds
b) a method to reduce cross talks
c) storage of data within transmitting medium until the receiver is ready to receive.
d) a method to reduce routing overhead. Ans: (a)
17. A protocol is a set of rules governing a time sequence of events that must take place between
a) peers
b) non-peers
c) allocated on stack
d) assigned to registers.
18. Memory allocation of variables declared in a program is
a) allocated in RAM.
b) allocated in ROM.
c) allocated on stack.
d) assigned to registers. Ans: (c)
19. A software that allows a personal computer to pretend as a computer terminal is
a) terminal adapter
b) bulletin board
c) modem
d) terminal emulation Ans: (d)
The following questions (Q20-Q33) are of a slightly different pattern than those above and may also be asked:
20. Find the output of the following program
int *p,*q;
p=(int *)1000;
q=(int *)2000;
printf("%d",(q-p));
Ans: 500
SAMPLE PAPER
SAMPLE PAPER AXES TECH
Computer Awareness
1. A 2MB PCM(pulse code modulation) has
a) 32 channels
b) 30 voice channels & 1 signalling channel.
c) 31 voice channels & 1 signalling channel.
d) 32 channels out of which 30 voice channels, 1 signalling channel, & 1 Synchronizatio channel. Ans: (c)
2. Time taken for 1 satellite hop in voice communication is
a) 1/2 second
b) 1 seconds
c) 4 seconds
d) 2 seconds Ans: (a)
3. Max number of satellite hops allowed in voice communication is :
a) only one
b) more han one
c) two hops
d) four hops Ans: (c)
4. What is the max. decimal number that can be accomodated in a byte.
a) 128
b) 256
c) 255
d) 512 Ans: (c)
5. Conditional results after execution of an instruction in a micro processor is stored in
a) register
b) accumulator
c) flag register
d) flag register part of PSW(Program Status Word) Ans: (d)
6. Frequency at which VOICE is sampled is
a) 4 Khz
b) 8 Khz
c) 16 Khz
d) 64 Khz Ans: (a)
7. Line of Sight is
a) Straight Line
b) Parabolic
c) Tx & Rx should be visible to each other
d) none Ans: (c)
8. Purpose of PC(Program Counter) in a MicroProcessor is
a) To store address of TOS(Top Of Stack)
b) To store address of next instruction to be executed.
c) count the number of instructions.
d) to store base address of the stack. Ans: (b)
9. What action is taken when the processor under execution is interrupted by a non-maskable interrupt?
a) Processor serves the interrupt request after completing the execution of the current instruction.
b) Processor serves the interupt request after completing the current task.
c) Processor serves the interupt request immediately.
d) Processor serving the interrupt request depends upon the priority of the current task under execution. Ans: (a)
10. The status of the Kernel is
a) task
b) process
c) not defined.
d) none of the above. Ans: (b)
Get More Sample Papers----> 1 2
Computer Awareness
1. A 2MB PCM(pulse code modulation) has
a) 32 channels
b) 30 voice channels & 1 signalling channel.
c) 31 voice channels & 1 signalling channel.
d) 32 channels out of which 30 voice channels, 1 signalling channel, & 1 Synchronizatio channel. Ans: (c)
2. Time taken for 1 satellite hop in voice communication is
a) 1/2 second
b) 1 seconds
c) 4 seconds
d) 2 seconds Ans: (a)
3. Max number of satellite hops allowed in voice communication is :
a) only one
b) more han one
c) two hops
d) four hops Ans: (c)
4. What is the max. decimal number that can be accomodated in a byte.
a) 128
b) 256
c) 255
d) 512 Ans: (c)
5. Conditional results after execution of an instruction in a micro processor is stored in
a) register
b) accumulator
c) flag register
d) flag register part of PSW(Program Status Word) Ans: (d)
6. Frequency at which VOICE is sampled is
a) 4 Khz
b) 8 Khz
c) 16 Khz
d) 64 Khz Ans: (a)
7. Line of Sight is
a) Straight Line
b) Parabolic
c) Tx & Rx should be visible to each other
d) none Ans: (c)
8. Purpose of PC(Program Counter) in a MicroProcessor is
a) To store address of TOS(Top Of Stack)
b) To store address of next instruction to be executed.
c) count the number of instructions.
d) to store base address of the stack. Ans: (b)
9. What action is taken when the processor under execution is interrupted by a non-maskable interrupt?
a) Processor serves the interrupt request after completing the execution of the current instruction.
b) Processor serves the interupt request after completing the current task.
c) Processor serves the interupt request immediately.
d) Processor serving the interrupt request depends upon the priority of the current task under execution. Ans: (a)
10. The status of the Kernel is
a) task
b) process
c) not defined.
d) none of the above. Ans: (b)
Get More Sample Papers----> 1 2
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