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HPCL Engineer Trainee Exam paper

ELECTRONICS
Q. Power diode is generally made from
a) Silicon
b) Germanium
c) Both
d) None of these
Q. When the both junction of NPN diode is reverse biased, then the diode is in which mode
a) Active
b) Cutoff
c) Saturation
d) inverted
Q. Which transistor mode gives the inverted output
a) Common Emitter
b) Common Base
c) Common Collector
d) None of these
Q. Which coupling gives the higher gain in case of amplifier
a) Capacitor coupling
b) Impedance coupling
c) Transformercoupling
Q. Which distortion is least objectionable in audio amplification
a) Phase
b) Frequency
c) Harmonic
d) Intermediation
Q. A narrow band amplifier has a band pass nearly…………of central frequency
a) 33.3%
b) 10%
c) 50%
Q. Phase shift oscillator consists
a) RL
b) RC
c) RLC
Q. Multivibrater Produces
a) Sine wave
b) Square wave
c) Smooth wave
d) sawtooth
Q. Convert the 101101 Binary number into octal no
a) 65
b) 55
c) 51
d) 45
Ans: 55
Q. 10 in BCD
a) 10100
b) 1100
c) 010111
d) None of these
Ans: None of these
Q. Which PNP device has a terminal for synchronizing purpose
a) SCS
b) Triac
c) Diac
d) SUS
Q. Addition of indium in semiconductor crystal makes
a) PNP
b) NPN
Q. Free electron exists in which band
a) 1
b) 2
c) 3
d) Conduction band
Q. Ripple factor of half wave rectifier
a) 1.21
b) 0.48
c) 0.5
Q. Transistor that can be used in enhancement mode
a) NPN
b) UJT
c) JFET
d) MOSFET
Q. Following contributes to harmonic distortion in Amplifier
a) +Ve feedback
b) –Ve feedback
c) Defective active device
Q. High cutoff frequency
a) CB
b) CC
c) CE
Q. Which is used as data selector?
a) Encoder
b) Decoder
c) modulator
d) Demodulator
Q. Read write capable memory
a) RAM
b) ROM
c) Both
d) None of these
Q.the radix or base of hexadecimal number system is ———–
a) 8
b) 16
c) 5
d) none of these
Ans: 16
Q.the no of 1’s in the binary representation of the expression 162*9+162*7+16*5+3 are
a) 10
b) 23
c) 6
d) 4
Q. the no of latches in F/F are ——-
a) 1
b) 2
c) 3
d) 4
Q.how many flip-flops are required to construct Mod -12 counter
a) 5
b) 4
c) 12
d) none
Ans: 4
Q. which logic gate has the output is compliment of its input ———-
a) OR
b) AND
c) NOT
d) X-OR
Ans: NOT
Q.no.of 2-input multiplexers needed to construct a 210 input multiplexer…….
a) 12
b) 31
c) 20
d) 16
Q.By adding inverters to the inputs and output of a AND gate we can obtain ……………
a) OR
b) AND
c) NOT
d) X-OR
Ans: X-OR
Q.how many NAND gates are needed to realize OR gate ————–
a) 1
b) 2
c) 3
d) 4
Ans: 3
Q.which is the first integrated logic family —————
a) RTL
b) DTL
c) TTL
d) none of these
Q. Which logic gate has output high if and only if all inputs are low ———?
a) NOR
b) NAND
c) X-NOR
d) AND
Ans: NAND
Q.According to Boolean algebra 1+A+B+C =
a) A
b) A+B+C
c) 1
d) none of these
Ans: 1
Q. If a=0x6db7 and b=0x2ae9 then what is the value of a”b————–
a) binary number for 1001.1101?
b) decimal number for 19?
c) excess-3 code for 29?
Q.what is the value of A’+1 ?
a) A
b) A’
c) 1
d) none of these
Ans: 1
Q.2 in 4 bit number one bit indicates sign of the number then the locations are from
a) -8 to 8
b) -7 to 7
c) -16 to 16
d) None
Q.Avalanche photo diode is used when compared to PIN diode bcz
a)larger band width
b)high sensitivity
C)——-
d)——–
Q.some non zero DC voltage is to RC low pass circuit then the DC voltage in the output contains
a) Same as in input
b) Higher than input
c) Zero
d) Slightly increases
Q.if the output of the gate is always high then the gates applied to this logic are 0,0
a) NAND and EX-NOR
b) NAND and NOR
c) AND and X-NOR
d) OR and XOR
Ans:a
Q.Thermal Run away is not possible in FET bcz the flow of
a)minority careers
b)Transconductance
c)_____
d)none
Ans : minority careers
Q.which of the following is/are true about 1′s and 2′s compements:
i)In 1′s complement form. 0 has two representations
ii)in 1′s complement, the magnitude of lowest number is equal to the magnitude of highest number
iii)In 2′s complement, 0 has two representations
a) i only
b) i and ii
c) iii only
d) all of these
Q.In the hybrid parameter model of a transistor reverse transfer voltage ratio and forward transfer current ratio are respectively given by:
a) h11 and h21
b) h12 and h11
c) h21 and h11
d) None of these
Q.The largest negative no can be represented with 8 bits in 2′s compliment representation?
a)-256
b)-255
c)-127
d)-128
Ans: -128
Q. How many NAND gates required to implement AB+CD+EF
a) 1
b) 2
c) 3
d) 4
Ans: 4
Q. Transparent latch is seen in which type of flip flop
a) SR FF
b) D FF
c) JK FF
d) D FF
Ans: D FF
Q. Odd parity generator uses which logic?
a) Digital
b) Analog
c) Sequential
d) none
Q. Which type of ADC is fastest?
a) SARC
b) Counter type
c) Intigrated type
d) Flash
ANS: Flash/Parallel
Q. Which one of the following is fastest read/writable memory?
a) PROM
b) EEPROM
c) Flash
d) none
Ans: Flash
8. In array programming which one is used
a) SISD
b) PISD
c) MISD
d) None
Q.Which one of the following has high I/p impedance
a) CC
b) CB
c) CE
d) None
Q. The maximum time allowed time for each flip flop for a mod 10 synchronous counter if each flip flop delay is 25ns.
a) 25 ns
b) 50 ns
c) 100 ns
d) none
Q. The resolution for a DAC is given by 0.4% then no. of bits of DAC is
a) 8- bits
b) 16- bits
c) 32- bits
d) none
Ans: 8- bits
41) The chip capacity is 256 bits, then the no.of chips required to build 1024 B memory Is
a) 32
b) 16
c) 15
d) 4
Q. Which of the following are correct?
1)A flip-flop is used to store 1-bit of information
2)Race around condition occurs in JK flip flop when both the inputs are 1
3)Master slave flip flop is used to store 2 bits of information
4)A transparent latch consists of a D- flip flop
a) 1,2,3
b) 1,3,4
c) 1,2,4
d) 2,3,4
Ans: 1,2,4
Q. output resistance of ideal OP AMP is
a) 0
b) 1
c) infinite
d) very high
ANS: 0
Q. CMRR of an OP AMP is given as 80db and Ad is 20000.Value of Acm will be
a) 4
b) 8
c) 2
d) 1
Ans: 2
Q.Si,Ge lie in ……..block of periodic table
a) III
b) V
c) IV A
d) IV B
Ans: IV A
Q.to obtain 10 mV resolution on 5 V range how many bit DAC is to be used
a) 4
b) 8
c) 16
d) 32
Q.% resolution of a 10 bit ADC
a) 1.588%
b) 0.392%
c) 0.0978%
d) 0.0244%
Ans: 0.0978%
Q.Efficiency of half wave rectifier
a) 45%
b) 50%
c) 86%
d) 100%

HPCL Engineer Trainee Exam paper

1. six members of a familyare travelling these are a,b,c,d,e, and f. b is

the son of c but c is not mothers of b. a and c are a married couple, e

is the brother of c. d is the daughter of a. f is the brother of b.

who is the wife of e:

(a) a

(b)f

(c)b

(d) cant be determined



2.six members of a familyare travelling these are a,b,c,d,e, and f. b is

the son of c but c is not mothers of b. a and c are a married couple, e

is the brother of c. d is the daughter of a. f is the brother of b.

which of following is pair of female

(a)ae

(b)bd

(c)df

(d)ad



3. six members of a familyare travelling these are a,b,c,d,e, and f. b is

the son of c but c is not mothers of b. a and c are a married couple, e

is the brother of c. d is the daughter of a. f is the brother of b.

how is e related to d:

(a) father

(b)brother

(c)uncle

(d)none of these



4.there is a group of five teachers a,b,c,d and e

- b and c teaches maths and geography

- a and c teach maths and history

- b and d teach political science and geofraphy

- d and e tech political science and biology

- e teaches biology, history, and political science

who teaches political science, geography and biology

(a)e

(b)d

(c)c

(d)b



5. there os a group of five teachers a,b,c,d and e

- b and c teaches maths and geography

- a and c teach maths and history

- b and d teach political science and geofraphy

- d and e tech political science and biology

- e teaches biology, history, and political science

who teaches in mathematics, political science and geography:

(a) a

(b)b

(c)d

(d)e



6. there os a group of five teachers a,b,c,d and e

- b and c teaches maths and geography



- a and c teach maths and history

- b and d teach political science and geofraphy

- d and e tech political science and biology

- e teaches biology, history, and political science

who teaches maths, geography and history

(a) c

(b)e

(c)a

(d)b



7. there os a group of five teachers a,b,c,d and e

- b and c teaches maths and geography

- a and c teach maths and history

- b and d teach political science and geofraphy

- d and e tech political science and biology

- e teaches biology, history, and political science

who teaches maths, geography and history

(a) e

(b)a

(c)d

(d)c



8.there os a group of five teachers a,b,c,d and e

- b and c teaches maths and geography

- a and c teach maths and history

- b and d teach political science and geofraphy

- d and e tech political science and biology

- e teaches biology, history, and political science

who teaches political science, history and biology

(a)a

(b)b

(c)c

(d)e



9.1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

how is ravi related to raju

(a)brother

(b)uncle

(c)cousin

(d)maternal uncle



10.1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

how ravi related to ashok

(a)maternal uncle

(b)cousin

(c)brother in law



(d)father in law



11.1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

how is ram related to suresh:

(a)brother

(b)cousin

(c)uncle

(d)brother in law



12. 1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

what is the surname of sanjay:

(a) chawla

(b) chopra

(c) khanna

(d) suresh



13. 1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

how is ram related to rita:

(a) brother

(b) uncle

(c) maternal uncle

(d) cousin



14. 1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

renu is sanjay's ----------

(a) sister

(b)sister in law

(c)aunty

(d)cousin



15. 1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

raju's sur name is:

(a) chawla

(b)khanna



(c)chopra

(d)none of these



16. 1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

sumit and suresh are related as:

(a) brother in law

(b)cousin

(c)brother

(d)uncle



17. 1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

how sonu related to ravi.

(a) brother

(b)brother in law

(c)nephew

(d)father



18.1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

how garima is related to mr. & mrs. khanna:

(a)daughter

(b)neice

(c)sister in law

(d)daughter in law



19. 1.gita, ravi and suresh are children of. mr. and mrs. khanna

2. renu,raja and sumit are children of mr. and mrs. chopra

3. sumit and gita are married and ashok and sanjay their children

4. garima and ram are children of mr. and mrs. chawla/

5 garima is married to suresh and has three children rata,sonu,raju

how ashok and sanjay are lated to mr. mrs. copra:

(a)sons

(b)nephews

(c)grand son

(d)none of these



20. in the office amongst staff a,b,c,d ,e of g. h there is only

computer. a programe has to be made and can be made by only one person at

a time. the office has 3 shifts, the morning shift from 6 am-12 am has 3

staff, afternoon shift from 12am. to 6 pm. has 3 staff, evening shift

from 6 pm to 12 pm has 2 staff one of the person did not used a printer:

1 b is the last person who use the computer

2 h use the computer after a and came iwth a



3 d used the computer after h and come with h but before e

4 c used the computer before b but arrived after e

5 a use the computer before f and arrived before g

if g used a computer justbefore c who use 4:

(a) a

(b)b

(c)e

(d)d



21. in the office amongst staff a,b,c,d ,e of g. h there is only

computer. a programe has to be made and can be made by only one person at

a time. the office has 3 shifts, the morning shift from 6 am-12 am has 3

staff, afternoon shift from 12am. to 6 pm. has 3 staff, evening shift

from 6 pm to 12 pm has 2 staff one of the person did not used a printer:

1 b is the last person who use the computer

2 h use the computer after a and came iwth a

3 d used the computer after h and come with h but before e

4 c used the computer before b but arrived after e

5 a use the computer before f and arrived before g

who arethe person in the night shift.

(a)f g

(b)f e

(c)b e

(d)b c



22. in the office amongst staff a,b,c,d ,e of g. h there is only

computer. a programe has to be made and can be made by only one person at

a time. the office has 3 shifts, the morning shift from 6 am-12 am has 3

staff, afternoon shift from 12am. to 6 pm. has 3 staff, evening shift

from 6 pm to 12 pm has 2 staff one of the person did not used a printer:

1 b is the last person who use the computer

2 h use the computer after a and came iwth a

3 d used the computer after h and come with h but before e

4 c used the computer before b but arrived after e

5 a use the computer before f and arrived before g

who use the 2nd computer

(a) a

(b)h

(c)d

(d)e



23. in the office amongst staff a,b,c,d ,e of g. h there is only

computer. a programe has to be made and can be made by only one person at

a time. the office has 3 shifts, the morning shift from 6 am-12 am has 3

staff, afternoon shift from 12am. to 6 pm. has 3 staff, evening shift

from 6 pm to 12 pm has 2 staff one of the person did not used a printer:

1 b is the last person who use the computer

2 h use the computer after a and came iwth a

3 d used the computer after h and come with h but before e

4 c used the computer before b but arrived after e

5 a use the computer before f and arrived before g

who are the person in the morning shift

(a) hec

(b)ahd


(c)efg

(d)dec



24. in the office amongst staff a,b,c,d ,e of g. h there is only

computer. a programe has to be made and can be made by only one person at

a time. the office has 3 shifts, the morning shift from 6 am-12 am has 3

staff, afternoon shift from 12am. to 6 pm. has 3 staff, evening shift

from 6 pm to 12 pm has 2 staff one of the person did not used a printer:

1 b is the last person who use the computer

2 h use the computer after a and came iwth a

3 d used the computer after h and come with h but before e

4 c used the computer before b but arrived after e

5 a use the computer before f and arrived before g

who takes first computer

(a) a

(b)h

(c)d

(d)e



25. seven persons p,q,r,s,t,u,v and w are to be assigned seven adjacent

chambers on the same floor in a apartment according to following

conditions:

1 u is assigned as far away from r as t is

2 p and r prefer to have adjacent chanmbers

3 v will have to be assigned chamber no. 5

4 q;s work requirs him to speak on phone frequently through out the day.

5 p, s and t all smoke. v is allergic to toacco smoke and must have non

smoker in the chamber ajjacent own.

6 unless otherwise specified all employeed maintain silence in their

chambers.

the best location of s in on the floor is:

(a)2

(b)3

(c)4

(d)7


Answers:

1 d 2 d 3 c 4 b 5 b 6 c

7 d 8 d 9 b 10 a 11 d 12 b

13 c 14 c 15 b 16 a 17 c 18 d

19 c 20 c 21 d 22 b 23 b 24 a 25 a

__________________
Answered By StudyChaCha Member

My HPCL Engineer Trainee Exam is about to come. So here can you provide me a sample of this exam?

I have a sample paper of HPCL Engineer Trainee Exam. So here I am providing you as you want.


Section-I:. General Aptitude test - It will consist of questions from:
i) Intellectual Potential

ii) Logical Reasoning
iii) Data Interpretation
iv) Quantitative Aptitude
v)Test of English Language

There are 85 question in this paper for all disciplines except Information System Officer, for which there will be 60 questions.

Section-II: Technical Knowledge test.
It will consist of questions specific to the qualifying disciplines/position applied for. There are 85 question in this paper for all disciplines except Information System Officer, for which there will be 90 questions.


Aptitude
) A farmer used 1034 acres of land for growing rice, wheat and corn in the ratio of 5:2:4 respectively. How many acres
were used for growing corn?
A) 188 acres B) 258 acres C) 376 acres D) 470 acres


) The more she learnt _______ the American Civil War, the more fascinated she became.
A) About B) From C) Off D) With

) How many times should the keys of a keyboard be pressed in order to type the first 300 counting numbers? (i.e. to
type 1, 2, 3 ... 300)
A) 362 B) 1448 C) 1504 D) 792

Electrical paper



Mechanical Engineering

) What is the phenomenon of emf development between two different metals placed in contact known as?
A) Seeback effect B) Thomson effect C) Peltier effect D) Thermocouple effect


) Which of the following bearings will have the least coefficient of friction?
A) Self aligning bearing B) Cylindrical roller bearing C) Thrust ball bearing D) Tapered bearing

) Define the gross head in a turbine installation.
A) The difference of level between the head race and the tail race
B) The difference of level between the reservoir and down stream
C) The difference of head between axis of turbine to discharge stream level
D) The head is actually used in developing power

__________________
Answered By StudyChaCha Member