Placement Paper of Companies

Mahanagar Telecom Nigam Ltd. Placement Question Papers

technical section

1.what is a aquadag.
2.about the quiscent condition
3.cassegrain feedis used with parabolic reflector to allow the feed convenient position. $
4. configuration of cascade.ce cc,cbce, none
5.resistors is measured in a) ohms .b) watts. c) both
6.if diameter of radar is >> 4 times $ how much range is increased ans)4
7.n type have which type of impurity
8.semiconductor strain gauge over the normal strain gauge is around.$
9.why slicon is prefeered
10. what is w2/w1=4 relationship is called $
11.which one is best outof(near about) nyqiust,bode, routhz
12.wein bridge frequecy conditions
13.The ‘h’ parameter equivalent circuit of a junction transistor is valid for –
a). High frequency, large signal operation
b.) High frequency, small signal operation
c.) Low frequency, small signal operation
d). Low frequency, large signal operation
14. comparater is used for?
15. astable and bistable uses
16. to increase input z u will prefer
a). Current series feedback
b). Current shunt feedback
c). Voltage series feedback
d). Voltage shunt feedback
17.. Enhancement type P channel MOSFET the gate voltage is +,-,+ &-
18 which gate gives 0 when i/p is 1
19. decimal have radix ?
20 what is binary for 10
21 one value was given SN72 like that ,u have to tell which device it means.
22. what does the sync mean in tv tramnsmission. $
23. question on transformer coupling(i didnt remember)
24. where the double tunning is used in radio receivers.
25. sequential circuit dependence on input and output.$
26.question on power receiveed by the receiver in tramsmmission
27.the probability density function of envelope of narrow band noise is gaussian………………………….
28. what isthe output of given IC .
29.if quantization level is incresed from 8—>9 then what is the effect
30. a figure was given and we have identify thec circuit.
31.in closed loop if u are having m=100 and negative feedback is .04,what is gain
32.k maps was given u have to give the right pairings.
33.a question on bandwidth
34.fourier series coprises of sine,cosine,both
35.stalites works in which frequency $ vhf,uhf,both
36.by which u can prepare a binary counter. $ d,rs,jk,latch
37.q based on use of schotky diode
38. q based on the use of varactor diode.
39.q based on allignment in paramagnetic materials.
40.which equipment uses minimum power.
41. it both input of nand gate is high,give the o/p.
42.how many bits are required to reepresent 35 in binary.
43.what is CMRR.
44.if current in zener is increased then what happens.(near about).
45.for,thermistor if temperature is increased then then temperature coefficent will?
46.relation between B(beta) and Ic in bjt
47.the resistance of loudspeaker is nearly ohms,k ohms,m ohms,
48.early state in bjt is due i/p applies,on time,off time,….

aptitude section

aptitiude q

antonymns of

1. debonair
2.bafeful
3.exasperate.
4.dainty
5.epolsive

6.a very simple passage followed by 5n scoring q’s
7.5 question to pick the wrong part in sentences

maths part

1.work… time taken by 4 men to do work is 98.if 3 more person are involved they the will finsh the work of 298 hrs in how many more days
2. dicount offered by 3 shopownwer
15 and 10
20 and 10
36
which is the most discounted
3.15^3-14^3/15^2+210+14^2 solve it
4. (312)^.5 * (201)^.5 solve it
5.radius of 2 circle and revolution of one was given,find the other
6. 7 know french ,8 know german ,3 know none ,find how many know both.
7. 80 %failed in maths, 70 %in english ,10 % failed in both,total passed no is 144.find total strength.? $
8.if watch is always makes error of 4 second (+)/hours,what will be time on 22 day 8 am when it was last corrested on 21 day 1 pm
9 q based on day of birth ?

analytical

1. cube face q(same of any two side is 7) $
2. relationships based simple q .(8 in no in total)
3. dog:caninne governor: ??? $
4. 0,6,24,36,120,312(approx likethat) what should not be there $
5 123456:234556 345678:???