Related Questions

While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is
A Short-circuited
B Open circuited
C Alright
D Leaky
A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be ?
A Paper capacitor
B Ceramic capacitor
C Electrolytic capacitor
D Any-of the above
Pure inductive circuit takes power from the A.C. line when
A Applied voltage decreases but current increases
B Applied voltage increases but current decreases
C Both applied voltage and current increase
D Both applied voltage and current decrease
By the use of which of the following power factor can be improved ?
A Phase advancers
B Synchronous compensators
C Static capacitors
D Any of the above
A synchronous motor installed at the receiving end substation operates with such an excitation that it takes power at lagging power factor. Now if the applied voltage of the synchronous motor goes down, the power factor of the synchronous motor will
A remain same
B go down
C improve
D none of the above
A survey was conducted among the students of Khulna University to find out how many forms of physical exercise usually swam, 25% said they usually did jogging, 20% said they played cricket, 15% said they usually played football and 20 respondents said they did not take any form of exercise. From the above findings it can be concluded that.
A The student of khulna University do not usually take physical exercise.
B No respondent took more than one form of exercise.
C The method of data collection was not valid.
D Some of the respondents took more than one form of exercise.
In a two value capacitor motor, the capacitor used for running purposes is
A air capacitor
B paper spaced oil filled type
C ceramic type
D a.c. electrolytic type
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
A Short-circuited
B All right
C Faulty
D None of the above
A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?
A Ceramic capacitor
B Mica capacitor
C Both will have identical value of capacitance
D It depends on applied voltage
In a capacitor start single-phase motor, when capacitor is replaced by a resistance
A torque will increase
B the motor will consume less power
C motor will run in reverse direction
D motor will continue to run in same direction

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