electrical engineering Mcqs
1. economics of power generation2. analog electronics3. solid state switching circuits4. parallel circuits5. switchgear and protection6. op amp circuits7. transistor audio power amplifiers8. electrostatics9. heating and welding10. multi stage transistor amplifiers11. passive filters12. network theorems13. regulated d c power supply14. a c fundamentals circuits and circuit theory15. electromagnetic induction16. power electronics17. magnetism and electromagnetism18. transformers19. modulation and demodulation20. d c generators21. semiconductor theory22. single phase induction motors23. semiconductor diode24. hybrid parameters25. digital electronics26. oscillators27. earthing or grounding28. single stage transistor amplifiers29. d c motors30. transistor biasing31. amplifiers with negative feedback32. basic electrical33. electronic instruments34. synchronous motors35. field effect transistors fet36. magnetic circuit37. control systems38. industrial drives39. power generation40. series parallel circuits41. transistor tuned amplifiers42. electrical engineering materials43. rectifiers and converters44. integrated circuits45. scr silicon controlled rectifiers46. cables47. polyphase induction motors48. measurement and instrumentation49. transistors50. electrical machine design51. electrolysis and storage of batteries52. electric traction53. transmission and distribution
3001. Basically a potentiometer is a device for________________?
comments icon0

A. measuring a voltage

B. none of the above

C. comparing two currents

D. measuring a current

E. comparing two voltages
3002. Current cannot flow to ground through _______________?
comments icon0

A. a mechanical ground

B. an ordinary ground

C. a virtual ground

D. an a.c. ground

3003. ________________directly converts temperature into voltage?
comments icon0
A. Thermocouple

B. Gear train

C. None of the above

D. Potentiometer

E. LVDT

3004. An instrument transformer is used to extend the range of______________?
comments icon0

A. electrostatic instrument

B. moving coil instrument

C. any of the above

D. induction instrument
3005. For measurement of inductance having high value, we should use______________?
comments icon0

A. Any of the above

B. Maxwells bridge

C. Maxwell Wein bridge

D. Hays bridge
3006. The differential voltage gain of a differential amplifier is equal to RC divided by _______________?
comments icon0

A. RE

B. 2re

C. re

D. re/2

3007. The position and velocity errors of a type-2 system are_____________?
comments icon0

A. zero, zero

B. zero, constant

C. constant, constant

D. constant, infinity

3008. A certain inverting amplifier has a closed-loop voltage gain of 25. The Op-amp has an open-loop voltage gain of 100,000. If an Op-amp with an open-loop voltage gain of 200,000 is substituted in the arrangement, the closed-loop gain________________?
comments icon0

A. increases slightly

B. remains at 25

C. doubles

D. drops to 12.5

3009. A Weston synchronoscope is a________________?
comments icon0

A. none of the above

B. moving coil instrument

C. dynamometer instrument

D. moving iron instrument

3010. Which of the following is exhibited by Root locus diagrams ?
comments icon0
A. The poles of the transfer function for a set of parameter values

B. The response of a system to a step input

C. The frequency response of a system

D. None of the above

E. The bandwidth of the system

3011. For open control system which of the following statements is incorrect ?
comments icon0

A. Less expensive

B. Errors are caused by disturbances

C. Construction is simple and maintenance easy

D. Recalibration is not required for maintaining the required quality of the output
3012. The type 1 system has _________ at the origin?
comments icon0

A. no pole

B. two poles

C. net pole

D. simple pole
3013. An induction wattmeter can be used for_________________?
comments icon0

A. both D.C. and A.C.

B. D.C. only

C. A.C. only

D. any of the above

3014. Most sensitive galvanometer is_____________?
comments icon0

A. elastic galvanometer

B. spot ballistic galvanometer

C. vibration galvanometer

D. Duddlb galvanometer

3015. The type 2 system has __________ at the origin?
comments icon0
A. two poles

B. no net pole

C. net pole

D. simple pole

3016. For an Op-amp with negative feedback, the output is_________________?
comments icon0

A. fed back to the noninverting input

B. increased

C. equal to the input

D. fed back to the inverting input
3017. Which of the following can be measured by the use of a tachogenerator ?
comments icon0
A. Speed

B. Speed and acceleration

C. Displacement

D. None of the above

E. Acceleration

3018. ____________technique is not applicable to nonlinear system ?
comments icon0

A. Phase-plane representation

B. Quasi linearization

C. Functional analysis

D. Nyquist Criterion
3019. For measuring a very high resistance we should use_______________?
comments icon0

A. None of the above

B. Kelvins double bridge

C. Wheat stone bridge

D. Meggar
3020. The temperature, under thermal and electrical system analogy, is considered analogous to_______________?
comments icon0

A. none of the above

B. charge

C. current

D. capacitance

E. voltage
3021. A car is raining at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
comments icon0

A. Steering wheel

B. None of the above

C. Eyes

D. Needle of the speedometer

E. Clutch

3022. A voltage follower _____________?
comments icon0

A. has no feedback resistor

B. has a voltage gain of 1

C. is noninverting

D. has all of these
3023. _________ locomotive has the highest operational availability?
comments icon0

A. Steam

B. Diesel

C. Electric
3024. The transient response of a system is mainly due to________________?
comments icon0
A. stored energy

B. friction

C. internal forces

D. inertia forces

3025. A sensitive galvanometer produces large deflection for a_______________?
comments icon0

A. large value of current

B. large value of power

C. small value of current

D. large value of voltage

E. none of the above

3026. The common-mode gain is ________________?
comments icon0

A. always unity

B. very high

C. very low

D. unpredictable

3027. Induction type single phase energy meters measure electric energy in_______________?
comments icon0

A. VAR

B. kWh

C. kW

D. Wh

E. None of the above

3028. An induction meter can handle current up to_____________?
comments icon0

A. 10:00 AM

B. 60 A

C. 30 A

D. 100 A
3029. The first order control system, which is well designed, has a_______________?
comments icon0

A. negative time constant

B. small bandwidth

C. none of the above

D. large negative transfer function pole
3030. In an open loop control system____________?
comments icon0

A. Only system parameters have effect on the control output

B. None of the above

C. Output is independent of control input

D. Output is dependent on control input

3031. The household energy meter is_______________?
comments icon0

A. none of the above

B. an indicating instrument

C. a recording instrument

D. an integrating instrument
3032. Systematic errors are_________________?
comments icon0

A. observational errors

B. environmental errors

C. instrumental errors

D. all of the above
3033. __________________can be extended to systems which are time-varying ?
comments icon0
A. State model representatives

B. Transfer functions

C. Root locus design

D. Bode-Nyquist stability methods

3034. An amplidyne can give which of the following characteristics ?
comments icon0

A. Constant current as well as constant voltage

B. Constant voltage

C. None of the above

D. Constant current, constant voltage and constant power

E. Constant current

3035. Addition of zeros in transfer function causes which of the following ?
comments icon0

A. Lead-compensation

B. None of the above

C. Lead-lag compensation

D. Lag-compensation
3036. With feed back ____________ reduces?
comments icon0
A. system gain

B. system stability

C. none of the above

D. system stability and gain

3037. When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is____________?
comments icon0
A. all right

B. faulty

C. short-circuited

3038. A control system with excessive noise, is likely to suffer from_______________?
comments icon0

A. vibrations

B. loss of gain

C. oscillations

D. saturation in amplifying stages
3039. In majority of instruments damping is provided by______________?
comments icon0

A. fluid friction

B. spring

C. eddy currents

D. all of the above

3040. In differential-mode, ______________?
comments icon0

A. the gain is one

B. the outputs are of different amplitudes

C. only one supply voltage is used

D. opposite polarity signals are applied to the inputs
3041. The spring material used in a spring control device should have the following property?
comments icon0

A. Should be non-magnetic

B. Most be of low temperature co-efficient

C. Should not be subjected to fatigue

D. Should have low specific resistance

E. All of the above
3042. The initial response when tne output is not equal to input is called_____________?
comments icon0
A. Transient response

B. Dynamic response

C. Either of the above

D. Error response

3043. It is required to measure the true open circuit e.m.f. of a battery. The best device is_____________?
comments icon0
A. D.C. potentiometer

B. None of the above

C. D.C. voltmeter

D. Ammeter and a known resistance

3044. The chemical effect of current is used in ______________?
comments icon0

A. D.C. ammeter

B. D.C. energy meter

C. none of the above

D. D.C. ammeter hour meter
3045. Which of the following are integrating instruments ?
comments icon0

A. Ammeters

B. Voltmeters

C. Ampere-hour and watt-hour meters

D. Wattmeters

3046. Two holes in the disc of energy meter are drilled at the opposite sides of the spindle to_____________?
comments icon0

A. increase its braking torque

B. improve its ventilation

C. increase its deflecting torque

D. eliminate creeping at no load
3047. In a low power factor wattmeter the pressure coil is connected_______________?
comments icon0

A. none of the above

B. to the load side of the current coil

C. in any of the two meters at connection

D. to the supply side of the current coil

3048. In the common mode, _______________?
comments icon0

A. both inputs are grounded

B. the outputs are connected together

C. an identical signal appears on both the inputs

D. the output signal are in-phase

3049. In a system low friction co-efficient facilitates___________?
comments icon0
A. reduced velocity lag error

B. increased speed of response

C. increased velocity lag error

D. reduced time constant of the system

3050. The ratio of maximum displacement deviation to full scale deviation of the instrument is called_______________?
comments icon0

A. dynamic deviation

B. linearity

C. static sensitivity

D. precision or accuracy