Neutralizing capacitors are normally used in which of the following applications: Audio amplifiers Video amplifiers Operational amplifiers RF and IF Amplifiers Correct answer: 4. RF and IF Amplifiers Neutralizing capacitor are generally used in RF and IF Amplifiers.
Which of the following can be the internal cause of overvoltage in a power system: Closing unloaded line Opening loaded line Insulation failure None of these All of these Correct answer: 5. All of these
Generally, Relay protection is not provided for: Alternator field failure Overcurrent in alternators Small distribution transformers All of these Correct answer: 4. All of these
The busbar protection means protection of: Circuit breakers Isolating switches Busbar only All of these Correct answer: 4. All of these
Yellow Violet Orange Silver color coded 4 Band Resistor has value of resistance: 4.7 ± 5% 4.7 ± 10% 47 ± 5% 47 ± 10% Correct answer: 4. 47 ± 10%
Resolution of instrument is defined as: The maximum quantity it can measure The minimum quantity it can measure Ability to distinguish polarity None of these Correct answer: 2. The minimum quantity it can measure The resolution of instrument is defined as the minimum quantity that it can measure.
The deflection methods of measurements are still very popular because these are: Most accurate Most simple Least time consuming 2 & 3 Correct answer: 4. 2 & 3 The deflection methods of measurements are still very popular because these are simple as well as the least time consuming
Which of the following is not a type of power MOSFET: EMOSFET LMOSFET LDMOSFET TMOSFET Correct answer: 1. EMOSFET EMOSFET or enhancement mode construction is not a power MOSFET type.
The purpose of providing iron core in transformer is to: Decrease the reluctance of the magnetic path Provide support to windings Reduce hysteresis loss Reduce eddy current losses Correct answer: 1. Decrease the reluctance of the magnetic path
The efficiency of a power transformer is around: 40% 70% 80% 95% Correct answer: 4. 95%