D.C. motor is to a drive a load which is almost nil for certain part of the load cycle and peak value for short duration. We will select this

D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. We will select the

A

Series motor

B

Shunt motor

C

Compound motor

D

Any of the above

You are about to install a second IDE hard drive in a PC that has only one IDE adapter. Your first hard drive will still be the boot drive. How should the second drive be configured?

A

as a master

B

as a secondary

C

as a slave

D

as a primary

E

as auto-select

Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be

A

Level compounded

B

Under compounded

C

Cumulatively compounded

D

Differentially compounded

Based on the information below, how much did a certain telephone call cost? 1. The call lasted 1 minute 27 seconds 2. The cost for the first 30 second unit is Tk. 1.80, call duration more than 30 seconds costs Tk. 0.90 per 30 second unit 3. Any call duration less than 30 seconds is rounded up to the nearest 30-second unit.

A

Tk. 1.80

B

Tk. 2.61

C

Tk. 2.70

D

Tk. 3.51

a motor -cycle covers 40 Km with a speed of 20 km /hr. Find the speed of the motor -cycle for the next 40 km journey so that the average speed of the whole journey will be 30 km / hr.

A

70.0km /hr

B

52.5km /hr

C

60.0km/hr

D

60. 5 km / hr

A motor cycle covers 40 km with a speed of 20 km/hr. Find the speed of the motor cycle for the next 40 km journy so that the average speed of the whole journey will be 30 km/hr?

A

70

B

52.5

C

60

D

60.5

The duration of sudden short-circuit test on a synchronous motor is usually about

A

one hour

B

one minute

C

one second

D

none of the above

By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?

A

Frame

B

Shaft

C

Commutator

D

Stator

When was drama Nil Darpan' published/

A

1819 A.D

B

1860 A.D

C

1909 A.D

D

1912 A.D

A synchronous motor is running on a load with normal excitation. Now if the load on the motor is increased

A

power factor as well as armature current will decrease

B

power factor as well as armature current will increase

C

power factor will increase but armature current will decrease

D

power factor will decrease and armature current will increase

D.C. motor is to a drive a load which is almost nil for certain part of the load cycle and peak value for short duration. We will select this

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