For the circuit given below find equivalent resistance: Correct answer: 2. 10 ohms Solution: Firstly name label one terminal of each resistor and head and tail, and by carefully observing one can understand the circuit is a simple parallel resistor circuit. See below. Now from parallel resistors formula: Req = 1/((1/R1) + (1/R2) + (1/R3)) … Read more
The ratio of GMR to actual radius for stranded conductor is: More than 1 Equal to 1 Equal to 0.7788 Less than 0.7788 Correct answer: 4. Less than 0.7788
Skin effect in transmission line conductors is proportional to: √Diameter of conductor Diameter of conductor Square of diameter of conductor Cube of diameter of conductor Correct answer: 3. Square of diameter of conductor
The dielectric strength of air under normal condition is about: 10.2 kVp/cm 30 kVp/cm 54.28 kVp/cm 200 kVp/cm Correct answer: 2. 30 kVp/cm The dielectric strength of air under normal condition is about 30 kVp/cm or 3kVp/mm
Which of the following statements is in accordance with De-Morgan’s second theorem: A NAND gate is equivalent to bubbled AND gate The AND gate is equivalent to bubbled NAND gate A NAND gate is always complementary to an AND gate A NAND gate is equivalent to bubbled OR Gate Correct answer: 4. A NAND gate … Read more
Certain digital logic gate outputs 1 when all inputs are 0. The gate is either: NOR or EX-NOR Gate NAND or EX-OR Gate NOR or EX-OR Gate AND or EX-NOR Gate Correct answer: 1. NOR or EX-NOR Gate
Which of following is correct about a combination circuit: It always contains memory elements It never contains memory elements It may sometimes contain memory elements All elements in combinational circuit are actually memory elements Correct answer: 2. It never contains memory elements
Which of the following device is commonly used for triggering a triac: Diode Zener diode Transistor Diac Correct answer: 4. Diac
Thyristors are classified as inverter grade or converter grade based on which factor: Turn on time Turn off time Forward breakover voltage Holding current Correct answer: 3. Forward break over voltage
Carrier frequency gate drive is used for turn-on of thyristor to reduce which of the below mentioned quantity/parameter: dv/dt di/dt Size of pulse transformer Turn on time Correct answer: 3. Size of pulse transformer