The capacity of a crane is expressed in terms of_______________?

Related Mcqs:

1. The characteristics of drive for crane hoisting and lowering are which of the following ?

   A. Precise control
   B. Smooth movement
   C. Fast speed control
   D. All of the above

2. For crane travel which of the following motors is normally used ?

   A. Synchronous motor
   B. D.C. differentially compound motor
   C. Ward-Leonard controlled D.C. shunt motor
   D. AC. slip ring motor

3. Which of the following motors is preferred for boom hoist of a travelling crane ?

   A. Single phase motor
   B. Synchronous motor
   C. A.C. slip ring motor
   D. Ward-Leonard controlled D.C. shunt motor

4. The size of an excavator is usually expressed in terms of_________________?

   A. ‘crowd’ motion
   B. angle of swing
   C. cubic metres
   D. travel in metres

5. The noise factor of an ideal amplifier expressed in db is_____________?

   A. 0
   B. 1
   C. 1
   D. 10

6. The gain of an amplifier is expressed in db because_____________?

   A. It is a simple unit
   B. Calculations become easy
   C. Human ear response is logarithmic
   D. None of the above

7. A gain of 1,000,000 times in power is expressed by_____________?

   A. 30 db
   B. 60 db
   C. 120 db
   D. 600 db

8. A gain of 1000 times in voltage is expressed by_______________?

   A. 60 db
   B. 30 db
   C. 120 db
   D. 600 db

9. Vout = 500 mV, and Vin = 1.3 V. The ratio Vout/ Vin expressed in dB is__________?

   A. 0 dB
   B. 8.30 dB
   C. -8.30 dB
   D. 0.8 dB

10. The only difference between construction of D.C generator and A.C generator is that of_______________?

    A. carbon brushes
    B. coil
    C. commutator
    D. magnetic field