Showing posts with label gate ee mcq. Show all posts
Showing posts with label gate ee mcq. Show all posts
Tuesday, October 20, 2015
Friday, January 2, 2015
Match the following (Gate EE Question:)
(a) no load and blocked rotor test (P) transformer
(b) sumpners test (Q) induction machine
(c) swinberns test (R) synchronous m/c
(d) slip test (S) DC m/c
(b) sumpners test (Q) induction machine
(c) swinberns test (R) synchronous m/c
(d) slip test (S) DC m/c
1) a-Q, b-S, c-P, d-Q
2) a-Q, b-P, c-S, d-R
3)a-S, b-R, c-P, d-Q
Thursday, January 1, 2015
Why You Should Write GATE Exam ?
Graduate Aptitude Test in Engineering or the GATE Exam is a popular exam for admission to post graduate engineering courses, Government of India provides scholarship to GATE qualified candidates. Many engineering students have some confusion regarding whether they should go for MTech through GATE or to go for MBA through CAT Exam. There is a misconception among many students, that MTech is just for becoming Professor in Engineering college . It is actually not like that . Below are some reasons of Why you should appear in Gate Exam.
1. Higher salaries are offered for MTech/ME candidates comparing to BE/BTech candidates.
2. More better and reputed companies hire M. Tech students through campus recruitments.
3. MTech degress provides you specialization in a certain area, and you can go for Phd after that.
4. Scholarship is provided to GATE qualified students, so you can do your MTech almost free of cost.
5. You can apply for faculty/ research positions in educational institutes/R&D centers.
6. MTech is just 2 year (4 semester) program, so you get more time to work out on other career opportunities as well.
7. You can have the chance to study in a Nationally reputed institute.
8. In many colleges/institutes GATE is mandatory qualification even for admission to self financed institutes.
9. Many industries and foreign universities prefer GATE qualified candidates.
10. GATE qualified candidates are also eligible for the award of junior research fellowship in CSIR laboratories.
11. Many Public service units like IOC, BPCL, Powergrid are now directly recruiting candidates on GATE score basis.
These are the reasons why one should appear the GATE exam.
Sunday, December 28, 2014
Choose the correct one from among the alternatives A,B,C,D after matching an item from Group-1 with the most appropriate item in Group-2 (GATE-2004)
Choose the correct one from among the alternatives A,B,C,D after matching an item from
Group-1 with the most appropriate item in Group-2 (GATE-2004)
Group-1 Group-2
P:Shift Register 1:Frequency Division Multiplexing
Q:Counter 2:Addressing in memory chips
R:Decoder 3:Serial to parallel data conversion
A) P-3,Q-2,R-1
B) P-3,Q-1,R-2
C) P-2,Q-1,R-3
D) P-1,Q-2,R-2
ANSWER:B
Group-1 with the most appropriate item in Group-2 (GATE-2004)
Group-1 Group-2
P:Shift Register 1:Frequency Division Multiplexing
Q:Counter 2:Addressing in memory chips
R:Decoder 3:Serial to parallel data conversion
A) P-3,Q-2,R-1
B) P-3,Q-1,R-2
C) P-2,Q-1,R-3
D) P-1,Q-2,R-2
ANSWER:B
Wednesday, November 13, 2013
Bundled conductor are mainly used in high voltage overhead transmission lines to-(GATE-EE-2003)
Bundled conductor are mainly used in high voltage overhead transmission lines to-(GATE-EE-2003)
A. reduce transmission losses
B. increasing mechanical strength of the line
C. reduce corona
D. reduce sag
B. increasing mechanical strength of the line
C. reduce corona
D. reduce sag
Answer: to reduce corona
Monday, November 11, 2013
A 4 point starter is used to start and control the speed of a (GATE-EE-2011)
A 4 point starter is used to start and control the speed of a (GATE-EE-2011)
(A) dc shunt motor with armature resistance control
(B) dc shunt motor with field weakening control
(C) dc series motor
(D) dc compound motor
Answer: option (A)
The armature current of DC shunt motor
Ia = (V- Eb) /Ra.
at the time of starting, Eb = 0. If the full supply voltage is applied to the motor, it will draw a large current due to low armature resistance.
A variable resistance should be connected in series with the armature resistance to limit the starting current.
(A) dc shunt motor with armature resistance control
(B) dc shunt motor with field weakening control
(C) dc series motor
(D) dc compound motor
Answer: option (A)
The armature current of DC shunt motor
Ia = (V- Eb) /Ra.
at the time of starting, Eb = 0. If the full supply voltage is applied to the motor, it will draw a large current due to low armature resistance.
A variable resistance should be connected in series with the armature resistance to limit the starting current.
Thursday, October 24, 2013
One of the parts ( A, B, C, D ) in the sentence given below contains an ERROR. Which one of the following is INCORRECT
GATE-EE-2012
***********
One of the parts ( A, B, C, D ) in the sentence given below contains an ERROR. Which one of the following is INCORRECT ?
I requested that the should be given the driving test today instead of tomorrow.
A. requested that
B. should be given
C. the driving test
D. instead of tomorrow
Answer:
B.should be given
***********
One of the parts ( A, B, C, D ) in the sentence given below contains an ERROR. Which one of the following is INCORRECT ?
I requested that the should be given the driving test today instead of tomorrow.
A. requested that
B. should be given
C. the driving test
D. instead of tomorrow
Answer:
B.should be given
Monday, October 21, 2013
For a single phase capacitor start induction motor which of the following statements is valid ? (Gate-EE-2007)
For a single phase capacitor start induction motor which of the following statements is valid ? (Gate-EE-2007)
(A) The capacitor is used for power factor improvement
(B) The direction of rotation can be changed by reversing the main winding terminals
(C) The direction of rotation cannot be changed
(D) The direction of rotation can be changed by interchanging the supply terminals
Answer: B
The direction of rotation can be changed by either reversing the main winding terminals or starting winding terminals.
(A) The capacitor is used for power factor improvement
(B) The direction of rotation can be changed by reversing the main winding terminals
(C) The direction of rotation cannot be changed
(D) The direction of rotation can be changed by interchanging the supply terminals
Answer: B
The direction of rotation can be changed by either reversing the main winding terminals or starting winding terminals.
Friday, October 18, 2013
Statement: you can always give me a ring whenever you need Which one of the following is the best inference from the above statement ?
GATE-EE-2013
***********
Statement: you can always give me a ring whenever you need
Which one of the following is the best inference from the above statement ?
A. because i have a nice caller tune.
B. because i have a better telephone facility.
C. because a friend in need in a friend indeed.
D. because you need not to pay towards the telephone bills when you give me a ring.
Answer: C
Because a friend in need in a friend indeed.
***********
Statement: you can always give me a ring whenever you need
Which one of the following is the best inference from the above statement ?
A. because i have a nice caller tune.
B. because i have a better telephone facility.
C. because a friend in need in a friend indeed.
D. because you need not to pay towards the telephone bills when you give me a ring.
Answer: C
Because a friend in need in a friend indeed.
Friday, October 11, 2013
An SCR is considered to be a semi-controlled device because (GATE-EE-2009)
An SCR is considered to be a semi-controlled device because (GATE-EE-2009)
(A) It can be turned OFF but not ON with a gate pulse.
(B) It conducts only during one half-cycle of an alternating current wave.
(C) It can be turned ON but not OFF with a gate pulse.
(D) It can be turned ON only during one half-cycle of an alternating voltage wave.
ANSWER: C
An SCR is considered to be a semi-controlled device because it can be turned ON but not OFF with a gate pulse.
(A) It can be turned OFF but not ON with a gate pulse.
(B) It conducts only during one half-cycle of an alternating current wave.
(C) It can be turned ON but not OFF with a gate pulse.
(D) It can be turned ON only during one half-cycle of an alternating voltage wave.
ANSWER: C
An SCR is considered to be a semi-controlled device because it can be turned ON but not OFF with a gate pulse.
Thursday, October 10, 2013
Match the items in List-I (To) with the items in the List-II (Use) and select the correct answer using the codes given below the lists. (GATE-EE-2009)
Match the items in List-I (To) with the items in the List-II (Use) and select the correct answer using the codes given below the lists. (GATE-EE-2009)
List-I
a. improve power factor
b. reduce the current ripples
c. increase the power flow in line
d. reduce the Ferranti effect
List-II
1. shunt reactor
2. shunt capacitor
3. series capacitor
4. series reactor
(A) a " 2, b " 3, c " 4, d " 1
(B) a " 2, b " 4, c " 3, d " 1
(C) a " 4, b " 3, c " 1, d " 2
(D) a " 4, b " 1, c " 3, d " 2
Answer: B
*.shunt capacitors are used to improve power factor
*.series reactors are used to reduce current ripples
*.series capacitors are used to increase power flow in line
*.shunt reactors re used to reduce the ferranti effect.
List-I
a. improve power factor
b. reduce the current ripples
c. increase the power flow in line
d. reduce the Ferranti effect
List-II
1. shunt reactor
2. shunt capacitor
3. series capacitor
4. series reactor
(A) a " 2, b " 3, c " 4, d " 1
(B) a " 2, b " 4, c " 3, d " 1
(C) a " 4, b " 3, c " 1, d " 2
(D) a " 4, b " 1, c " 3, d " 2
Answer: B
*.shunt capacitors are used to improve power factor
*.series reactors are used to reduce current ripples
*.series capacitors are used to increase power flow in line
*.shunt reactors re used to reduce the ferranti effect.
Wednesday, October 2, 2013
The power electronic converter shown in figure has a single-pole-double-throw switch. The pole P of the switch is connected alternatively throws A and B. The converter shown is a
The power electronic converter shown in figure has a single-pole-double-throw switch. The pole P of the switch is connected alternatively throws A and B. The converter shown is a
A. step-down chopper (buck converter)
B. half-wave rectifier
C. step-up chopper (boost converter)
D. full wave rectifier. (GATE-EE-2010)
A. step-down chopper (buck converter)
B. half-wave rectifier
C. step-up chopper (boost converter)
D. full wave rectifier. (GATE-EE-2010)
Answer: It is a step-down chopper
Monday, September 30, 2013
The variation of drain current with gate-to-source voltage of a MOSFET is shown in fig.The MOSFET is (GATE-EE-2003)
The variation of drain current with gate-to-source voltage of a MOSFET is shown in fig.The MOSFET is (GATE-EE-2003)
A. an n-channel depletion mode device
B. an n-channel enhancement mode device
C. a p-channel depletion mode device
D. a p-channel enhancement mode device
ANSWER: C
It is the transfer characteristics of a depletion mode device and it must be p-channel, since the Vgs is positive in p-channel depletion region.
A. an n-channel depletion mode device
B. an n-channel enhancement mode device
C. a p-channel depletion mode device
D. a p-channel enhancement mode device
ANSWER: C
It is the transfer characteristics of a depletion mode device and it must be p-channel, since the Vgs is positive in p-channel depletion region.
Saturday, September 28, 2013
The steady state error due to step input for a type 1 system is ........ (GATE-EE-1995)
The steady state error due to step input for a type 1 system is ........ (GATE-EE-1995)
Answer : 0
Answer : 0
All the resistances in the figure are 1 ohm each.The value of current 'I' is
All the resistances in the figure are 1 ohm each.The value of current 'I' is ( GATE-EE-1992)
A. 1/15A
B. 2/15A
C. 4/15A
D. 8/15A
Answer:
Given R = 1, v = 1
After reduction , we get Req = 1.875
I = 1 / 1.875 = 0.533 = 8/15 A
A. 1/15A
B. 2/15A
C. 4/15A
D. 8/15A
Answer:
Given R = 1, v = 1
After reduction , we get Req = 1.875
I = 1 / 1.875 = 0.533 = 8/15 A
Friday, September 27, 2013
The uncontrolled electronic switch used in power electronic converter is
The uncontrolled electronic switch used in power electronic converter is (GATE-EE-1998)
A. thyristor
B. bipolar junction transistor
C. diode
D. MOSFET
Explanatory answer:
Thyristor - semi controlled device
BJT and Mosfet -fully controlled device
Diode - uncontrolled device, since its on/off depends on external circuit.we cannot control
Thursday, September 26, 2013
The concept of an electrically short, medium and long transmission line is primarily based on the (GATE-EE-2006)
The concept of an electrically short, medium and long transmission line is primarily based on the (GATE-EE-2006)
A. nominal voltage of the line
B. physical length of line
C. wave length of line
D. power transmitted over the line
Ans:
Physical length of line
A. nominal voltage of the line
B. physical length of line
C. wave length of line
D. power transmitted over the line
Ans:
Physical length of line
Wednesday, September 25, 2013
A low-pass filter with a cut-off frequency of 30HZ is cascaded with a high-pass filter with a cut-off frequency of 20HZ. The resultant system of filters will function as
A low-pass filter with a cut-off frequency of 30HZ is cascaded with a high-pass filter with a cut-off frequency of 20HZ. The resultant system of filters will function as (GATE-EE-2011)
A. an all-pass filter
B. an all-stop filter
C. a band stop (band reject) filter
D. a band-pass filter
Explanatory answer :
Low-pass filter with a cut-off frequency of 30HZ:
High-pass filter with a cut-off frequency of 20HZ:
The cascade combination filter is
A band-pass filter
A. an all-pass filter
B. an all-stop filter
C. a band stop (band reject) filter
D. a band-pass filter
Explanatory answer :
Low-pass filter with a cut-off frequency of 30HZ:
The cascade combination filter is
Tuesday, September 24, 2013
The transfer function of a system is given as
The transfer function of a system is given as
This system is (GATE-EE-2008)
A. an overdamped system
B. an underdamped system
C. a critically damped system
D. an unstable system
Explanatory answer:
Systems are classified according to their damping ratio( ζ ) vales,
If ζ < 1, underdamped system
if ζ = 1, critically damped system
if ζ > 1, overdamped system .
Comparing s^2+ 2ζwn +wn^2 with s^2+ 20s +100
wn^2=100, wn = 10
A. an overdamped system
B. an underdamped system
C. a critically damped system
D. an unstable system
Explanatory answer:
Systems are classified according to their damping ratio( ζ ) vales,
If ζ < 1, underdamped system
if ζ = 1, critically damped system
if ζ > 1, overdamped system .
Comparing s^2+ 2ζwn +wn^2 with s^2+ 20s +100
wn^2=100, wn = 10
2ζwn = 20, ζ = 20/20= 1
ζ=1, hence this system is a critically damped system.
Monday, September 23, 2013
An Enhancement tye n-channel MOSFET is represented by the symbol
An Enhancement tye n-channel MOSFET is represented by the symbol (GATE-EE-1999)
Explanatory answer:
The dashed line between drain and source only used in E-mosfet symbol and that is the basic symbol difference between D-mosfet and E-mosfet .
From the given options only option A and B has dashed line, but in n- channel arrow mark will be pointed in,so the correct answer will be option A.
Explanatory answer:
The dashed line between drain and source only used in E-mosfet symbol and that is the basic symbol difference between D-mosfet and E-mosfet .
From the given options only option A and B has dashed line, but in n- channel arrow mark will be pointed in,so the correct answer will be option A.
