Question: Which type of CPLD packaging can provide maximum number of pins on the package due to small size of the pins ?

• 1. PLCC
• 2. QFP
• 3. PGA
• 4. BGA

Question: What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA?

• 1. Propagation delay will increase
• 2. FPGA area will increase
• 3. Wastage of logic modules will not be prevented
• 4. Number of interconnected paths in device will decrease ?

Question: The universal gate is ________________?

• 1. NAND gate
• 2. OR gate
• 3. AND gate
• 4. None of the above

Question: The inputs of a NAND gate are connected together. The resulting circuit is _______________?

• 1. OR gate
• 2. AND gate
• 3. NOT gate
• 4. None of the above

Question: Specific energy consumption becomes________________?

• 1. more on steeper gradient
• 2. more with high train resistance
• 3. less if distance between stops is more
• 4. all of the above

Question: The voltage used for suburban trains in D.C. system is usually_______________?

• 1. 12 V
• 2. 24 V
• 3. 220 V
• 4. 600 to 750 V

Question: _______________method can bring the locomotive to dead stop?

• 1. Plugging braking
• 2. Rheostatic braking
• 3. Regenerative braking
• 4. None of the above

Question: Vacuum is created by which of the following ?

• 1. Vacuum pump
• 2. Ejector
• 3. Any of the above
• 4. None of the above

Question: Battery operated trucks are used in________________?

• 1. steel mills
• 2. power stations
• 3. narrow gauge traction
• 4. factories for material transportation

Question: The resistance encountered by a train in motion is on account of_________________?

• 1. resistance offered by air
• 2. friction at the track
• 3. friction at various parts of the rolling stock
• 4. all of the above