Hindustan Aeronautics Limited Management Trainee Papers

Hii sir, I Wants to get the Question Paper of the Management Trainee Recruitment Electronics of the Hindustan Aeronautics Limited ?

[pawan]

Hindustan Aeronautics Limited is an Indian state-owned aerospace and defence company based in Bangalore, Karnataka. It is governed under the management of the Indian Ministry of Defence.

The Management Trainee Recruitment Electronics of the Hindustan Aeronautics Limited will be in three parts & comprising of Multiple Choice Questions (MCQs).

Part I will consist of 20 MCQs on General Awareness.
Part II will consist of 40 MCQs on English & Reasoning.
Part III will consist of 100 MCQs on the concerned discipline of Engineering / Marketing / HR / Legal.

The Sample Question Paper of the Management Trainee Recruitment Electronics of the Hindustan Aeronautics Limited is given below

Electronics Engineering

The purpose of feedback transformer & diode in complementary commutated inverters is to-

In order to obtain static voltage equalization in series connected SCRs connection r made of-(this question repeated) (i.e. 2 times same question Haaa)

In phase controlled rectification PF=

Why sector winding is used in synchronous motor?

A calculation of making current where MVA & KV was given.

The o?p voltage e1 & e2 of 2 full-bridge inverters added using o/p transformer. In order to eliminate 5th harmonic from o/p voltage, the phase angle between e1&e2 will be-

A single phase fully controlled line commutated ac-dc converter operates as an inverter when-

An SCR has half cycle surge current rating of 3000A for 50Hz. One cycle surge current will be. (double of that)

When compared to an symmetrical thyristor, the turn off time & reverse blocking voltage of an asymmetrical thyristor will be-

A step-up chopper is feed from an 220v dc source to deliver a load voltage of 66o v. If the non conducting time is 100micro-sec then reqd pulse width will be. (get duty cycle only)

There were some 5-6 numerical problems which I could not remember totally but they consist of firing angle & power transfer of inverter, SCR. Go llok for that.

Relay current setting & Ct ratio was given you have to find out Relay Pick up Current.

One question from Dc shunt motor- like a resistance is added of 4.5 ohm in series with arm where rest of arm is 0.5 ohm. Machine is supplied 220v. find out the null current.

In aptitude part see through series completion there was a 5-6 no of that.

No aptitude questing like avg, %, proff-loss, prob, etc.

Why rotor of SCIM is skewed?

Good transformer oil contains how much amount of water in ppm?

Lightning over voltage create how much volt?
K/s(s+1)(s+5) then find out the value of K so that system become stable.

There was a question from definition of Nyquist criteria.

Standing done up to the frequency range of? (audio)

If a square waveform if given to the supply side of a 2wdg transformer its o/p waveform will be-

SC test done on transformer because

If a transformer is operating in .8 PF lag & at efficiency of .9, if now P is .8 lead the efficiency will become.

Question Paper of the Management Trainee Recruitment of the Hindustan Aeronautics Limited

1. When length of a wire increases its resistance
a. doubles b. half c. remains same
Ans: ( a )
2. When a 50 Hz ,6-pole Induction Motor runs at 975rpm,the rotor emf frequency is
a. 12.5Hz b. 1.25Hz c. 4Hz
Ans: ( b )
3. When a 6 pole 50Hz Induction Motor runs at 1450 rpm , its working mode is
a. motoring b. braking c. generating
Ans: ( a )
4. Slips for Different modes of operation of Induction Motor are
answer: motoring -0<S<1,generating- S<0,braking - S>1
5. Damping ratio ( ) is 0.75, natural frequency is 12 rad/s are given & asked to find peak time
6. In electrodynamo-meter type wattmeter
a. pressure coil is made fixed
b. current coil is made fixed
c. both the coils are made fixed
Ans: ( a )
7. In flux meter control torque is produced by
a. weights attached to it.
b. Springs
c. No control torque is there
Ans: ( c )
8. One question regarding hot wire instrument
9. In MI meters deflecting torque is proportional to
a. square of the current
b. square of the voltage
Ans: ( a )
10.In 3- system total power is given by
a. √3VLILcos
b. 3VLILcos
c. VLILcos
Ans: ( a )
11.From supply one 3- step-down transformer is drawing 10 A, the secondary current will be
minimum when the transformer is
a. star-delta
b. delta-star
c. delta-delta
d. star-star
Ans: ( b )
12.Transformer rating is expressed in
a. KVA
b. KVAR
c. KW
Ans: ( a )
13.Manganin is a
a. Insulator
b. Semi-conductor
c. Alloy
14.Dual scope oscilloscope has
a. two separate horizontal and two separate vertical plates
b. one horizontal and two separate vertical plates
c. two separate horizontal and one vertical plates
d. one horizontal and one vertical plates
15.Standard Cell voltage is measured by
a. MI meter
b. MC meter
c. Potentiometer
16.The input resistance of the CRO is of the order of
a. tens of ohm
b. mega ohm
c. kilo ohm
d. fraction of an ohm
Ans: ( b )
17.Errors are introduced in Wheatstone bridge due to
a. lead resistance
b. contact resistance
c. some thing is given
d. all of the above
18.HRC fuse and circuit-breaker combination is used CB operates for
a. low over-load currents
b. high over-load currents
c. combination is never used
19.G(s) = K / s(s+5)(s+1) is given to find the value of K for stable operation
20.By increasing gain of the system root locus will
a. moves away from poles
b. moves away from zeros
c. crosses imaginary axis
Ans: ( a )
21.When the load current is high while measuring power using wattmeter
a. current coil is connected near load
b. pressure coil is connected near load
22.C = 0.01F and L = 1 mH and current is 10 A and asked to find the voltage drop
23.Transmission line is terminated by R and no reflection is there , then the value of R is

Ans: 400 ohm
24.One question regarding shunt ohm-meter and seriea ohm-meter
25.Inverted V curves are drawn between
Ans: field current Vs power factor