Ques 71. ________ braking is generally used in braking of battery-operated scooters.
Ques 72. A capacitor dissipates ________ energy.
- 10% of the stored
- 20% of the stored
- 50% of the stored
Ques 73. Which of the following is not a type of operating force in Electromechanical Indicating Instrument?
- Deflecting force
- Controlling force
- Damping force
- Gravitational force✔
Ques 74. If rotor resistance in an induction motor is small, rotor current will be
Ques 75. If a 2.2 m long conductor has a cross-sectional area of 0.025 m2 and resistance of 5 ohms, find its resistivity.
- 0.072 ohm m
- 0.057 ohm- m✔
- 0.58 ohm m
- 0.67 ohm m
Ques 76. Voltage regulator is used in
- Sewing Machines
- Mobile phones✔
- Providing constant power supply to computers
- Refrigeration operation
Ques 77. Which of the following is an Integrating instrument?
- Watt-hour meter✔
Ques 78. Which of the following part of a transformer consists of a small vessel which contains a drying agent?
- Oil tank
Ques 79. In PMMC instruments, torque/deflection produced in the coil is ________ current flowing through it.
- Directly proportional✔
- Inversely proportional
- Directly proportional to the square of
- Inversely proportional to the square of
Ques 80. Which of the following is generally used to make Permanent magnets?
- Cast iron
- Silicon steel
- Cobalt steel✔