WorksheetsEEE/ECE/ECE/EIE
Total questions: 20
Worksheet time: 7mins
1. Ohm’s law is not applicable to
vacuum tubes
carbon resistors
high voltage circuits
circuits with low current densities
2. The rating of a fuse wire is always expressed in
ampere-hours
ampere-volts
kWh
amperes
3. Two resistors are said to be connected in series when
same current passes in turn through both
both carry the same value of current
total current equals the sum of branch currents
sum of IR drops equals the applied e.m.f.
4. Bulbs in street lighting are all connected in
parallel
series
series-parallel
end-to-end
5. Star-delta starting of motors is not possible in case of
single phase motors
variable speed motors
low horse power motors
high speed motors
6. If an induction motor with certain ratio of rotor to stator slots, runs at 1/7 of the normal speed, the phenomenon will be termed as
humming
hunting
crawling
cogging
7. The shape of the torque/slip curve of induction motor is
parabola
hyperbola
rectangular parabola
straight line
8. In a balanced 3-phase system, if one of the two wattmeter’s reading is negative then the
Reading should be taken as it is
Reading should be taken after reversing the current coil
Reading should be taken after reversing the pressure coil
All of these
9. If the armature current of dc series motor has become twice then the torque will become
Twice of the former
Four times of the former
One fourth of the former
Remains same
10. In DSP Processor, what kind of queuing is undertaken/executed through instruction register and instruction cache?
Implicate
Explicate
Both a and b
None of the above
11. In a peak detector circuit, which component holds the peak value till a higher peak value is detected?
Diode
Capacitor
Inductor
MOSFET switch
12. Popcorn noise is generated by abrupt variations in input bias current especially due to imperfect surface conditions of
Conductor
Insulator
Semiconductor
None of the above
13. For high voltage transmission lines, why are conductors suspended from towers?
Increase the clearance from ground.
Reduce clearance from ground.
Take care of increase in length.
Reduce the environmental effects.
14. A partial-fraction expansion of the transfer function in Z-1 leads to
The parallel form I structure
The parallel form II structure
Cascaded structure
None of the above
15. In a 3 phase semiconverter, the output voltage becomes discontinuous for
firing angle >60°
firing angle >30°
firing angle > 90°
firing angle > 120°
16. The sensitivity of human eyes is maximum at
white portion of spectrum
green portion of spectrum
red portion of spectrum
violet portion of spectrum
17. In cascade form of realization, how many bits should be used to represent the FIR filter coefficients in order to avoid the quantization effect on filter coefficients?
5 to 10
12 to 14
20 to 24
28 to 40
18. The size of cache memory in most microcomputers is about
a few bytes
a few gigabytes
a few megabytes
a few kilobytes
19. An SCR combines the features of
A rectifier and resistance
A rectifier and transistor
A rectifier and capacitor
None of the above
20. For an Op-amp with negative feedback, the output is
equal to the input
increased
fed back to the inverting input
fed back to the noninverting input
