Question 1 : For dielectric heating the range of frequency normally employed is
1. 10 KHz to 100 KHz.
2. 100 KHz to 10 MHz.
3. 1 MHz to 10 MHz.
4. 10 MHz to 40 MHz.
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Question 2 : The supply frequency usually employed for high frequency eddy current heating is
1. 1 KHz.
2. 5 KHz.
3. 10 MHz.
4. 10 KHz to 400 KHz.
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Question 3 : The conductor of a 10 Km long single phase, two wire line are separated by a distance of 1.5 m the diameter of each conductor the inductance of the circuit is
1. 23.8 mH.
2. 23.33 mH.
3. 25.8 mH.
4. 21.2 mH.
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Question 4 : What type of back up protection is used for alternators?
1. IDMT relay.
2. Buchholz relay.
3. Mho relay.
4. Impedance relay.
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Question 5 : Mho relay is used for protection of
1. short lines.
2. long lines.
3. medium lines.
4. none of these.
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Question 6 : If clock time period is 1ms, what is its frequency
1. 1 mHz
2. 1 kHz
3. 1 MHz
4. None of the above
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Question 7 : When testing a coil having a resistance of 10 ohms, resonance occured when the oscillator frequency was 10 Mhz and rotating capacitor was set at 500/2�� pF. The effective value of the Q of the coil is
1. 200.
2. 254.
3. 314.
4. 542.
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Question 8 : An electrical circuit with 10 branches and 7 nodes will have
1. 10 loop equations.
2. 7 loop equations.
3. 3 loop equations.
4. 4 loop equations.
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Question 9 : In signal flow graph output node is node having only------------
1. incoming branches
2. outgoing branches
3. both 1 and 2
4. none of the above
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Question 10 : In signal flow graph input node is node having only------------
1. incoming branches
2. outgoing branches
3. both 1 and 2
4. none of the above
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